Engineering › Building and Construction

Dyeing and Modifying Textile Fibers

Works Count: 53360

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Description

This cluster of papers explores recent advancements in textile dyeing techniques, materials, and processes. It covers a wide range of topics including the use of natural dyes, keratin-based biomaterials for biomedical applications, enzymatic processing of fibers, sustainable production methods, and the use of antimicrobial agents in textiles. The research also delves into the application of ionic liquids, eco-friendly dyeing processes, and the development of high-performance textiles.

Keywords

Textiles; Dyeing; Natural Dyes; Keratin; Antimicrobial; Biomedical Applications; Enzymatic Processing; Sustainable Production; Ionic Liquids; Fibers

Keratins. Their composition, structure and biosynthesis

1973-01-01

Russell Fraser , T.P. MacRae , Glenn E. Rogers

Is α-Keratin a Coiled Coil?

1952-11-01

Francis Crick

Textile Dyes: Dyeing Process and Environmental Impact

2013-01-16

Farah Maria Drumond Chequer , Gisele Augusto Rodrigues de Oliveira , Elisa Raquel Anastácio Ferraz +3 more

Dyes may be defined as substances that, when applied to a substrate provide color by a process that alters, at least temporarily, any crystal structure of the colored substances [1,2]. … Dyes may be defined as substances that, when applied to a substrate provide color by a process that alters, at least temporarily, any crystal structure of the colored substances [1,2]. Such substances with considerable coloring capacity are widely employed in the textile, pharmaceutical, food, cosmetics, plastics, photographic and paper industries [3,4]. The dyes can adhere to compatible surfaces by solution, by forming covalent bond or complexes with salts or metals, by physical adsorption or by mechanical retention [1,2]. Dyes are classified according to their application and chemical structure, and are composed of a group of atoms known as chromophores, responsible for the dye color. These chromophore-containing cen‐ ters are based on diverse functional groups, such as azo, anthraquinone, methine, nitro, aril‐ methane, carbonyl and others. In addition, electrons withdrawing or donating substituents so as to generate or intensify the color of the chromophores are denominated as auxo‐ chromes. The most common auxochromes are amine, carboxyl, sulfonate and hydroxyl [5-7].

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Biodeterioration of textiles

2003-08-08

Jadwiga Szostak-Kotowa

Recent advancements in natural dye applications: a review

2013-04-03

Mohammad Shahid , Shahid‐ul‐Islam , Faqeer Mohammad

Functionalisation of textiles by inorganic sol–gel coatings

2005-01-01

Boris Mahltig , Helfried Haufe , Horst Böttcher

The maintenance and improvement of current properties and the creation of new material properties are the most important reasons for the functionalisation of textiles. The coating of textiles with chemically … The maintenance and improvement of current properties and the creation of new material properties are the most important reasons for the functionalisation of textiles. The coating of textiles with chemically or physically modified silica sols with particle diameters smaller than 50 nm ("nanosols") enables the manifold alteration of their physico-mechanical, optical, electrical and biological properties. Thus the protection of textiles against destruction and the creation of new advantageous functions can be realised. Prospective new products to be developed include textiles with water, oil and soil repellency and with antimicrobial properties. This article discusses recent results from applying modified silica nanosols to the functionalisation of textiles.

Preparation of stable aqueous solution of keratins, and physiochemical and biodegradational properties of films

1996-08-01

Kiyoshi Yamauchi , Asao Yamauchi , Tomoo Kusunoki +2 more

A stable aqueous solution of reduced keratins was prepared by extracting the proteins from wool (Corriedale) with a mixture of urea, mercaptanol, surfactant, and water at 40–60°C. Sodium dodecyl sulfate … A stable aqueous solution of reduced keratins was prepared by extracting the proteins from wool (Corriedale) with a mixture of urea, mercaptanol, surfactant, and water at 40–60°C. Sodium dodecyl sulfate was especially effective as a surfactant, not only in promoting extraction but also in stabilizing the aqueous protein solution. The proteins had the following constants: MW, 52,000–69,000 daltons; cysteine content, 8–9 mol %; pl about 6.7. A clear film was readily prepared from a keratin solution containing glycerol. The film was insoluble in water and organic solvents including dimethyl sulfoxide. The keratin film was permeable to glucose, urea, and sodium chloride. The keratin film was degraded in vitro (by trypsin) and in vivo (by subcutaneous embedding in mice). © 1996 John Wiley & Sons, Inc.

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Preparation and characterization of keratin–chitosan composite film

2002-02-01

Toshizumi Tanabe , Naoya Okitsu , Akira Tachibana +1 more

Improving light fastness of natural dyes on cotton yarn

2005-08-09

Dan Cristea , Gérard Vilarem

Hair dyes are mutagenic: identification of a variety of mutagenic ingredients.

1975-06-01

B N Ames , Harold O. Kammen , Edna N. Yamasaki

We have previously described a sensitive bacterial test for dectecting carcinogens as mutagens. We have previously described a sensitive bacterial test for detecting carcinogens as mutagens. We show here that … We have previously described a sensitive bacterial test for dectecting carcinogens as mutagens. We have previously described a sensitive bacterial test for detecting carcinogens as mutagens. We show here that 89% (150/169) of commercial oxidative-type (hydrogen peroxide) hair dye formulations are mutagenic in this test. Of the 18 components of these hair dyes, nine show various degrees of mutagenicity:2,4-diaminoanisole, 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2,5-diaminoanisole, 2-amino-5-nitrophenol, m-phenylenediamine, o-phenylenediamine, 2-amino-4-nitrophenol, and 2,5-diaminotoluene. Three hair dye components (p-phenylenediamine, 2,5-diaminotuluene, and 2,5-diaminoanisole) become strongly mutagenic after oxidation by H2O2: the mutagenic product of p-phenylenediamine is identified as the known trimer, Bandrowski's base. 2,4-Diaminotoluene, a hair dye component until recently, is also shown to be mutagenic: this compound has been shown to be a carcinogen in rats and is used in large amounts in the polyurethane foam industry. About 20,000,000 people (mostly women) dye their hair in the U.S. and the hazard could be considerable if these chemicals are actually mutagenic and carcinogenic in humans.

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Natural dyes in modern textile dyehouses — how to combine experiences of two centuries to meet the demands of the future?

2003-02-04

Thomas Bechtold , Adrian Ţurcanu , Erika Ganglberger +1 more

Some properties of keratin biomaterials: Kerateines

2009-10-13

Paulina S. Hill , Helen T. Brantley , Mark Van Dyke

Functional finishing in cotton fabrics using zinc oxide nanoparticles

2006-11-01

Avadhesh Kumar Yadav , Virendra Prasad , A A Kathe +4 more

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Industrial Dyes?Chemistry, Properties, Applications

2004-01-01

Thomas Lazar

Chemical and Physical Behavior of Human Hair

2012-01-01

Clarence R. Robbins

Ionic liquids as novel solvents for the dissolution and blending of wool keratin fibers

2005-01-01

Haibo Xie , Shenghai Li , Suobo Zhang

1-Butyl-3-methylimidazolium chloride ionic liquid has been developed for the dissolution and regeneration of wool keratin fibers, which can be used to prepare wool keratin/cellulose blended materials directly. 1-Butyl-3-methylimidazolium chloride ionic liquid has been developed for the dissolution and regeneration of wool keratin fibers, which can be used to prepare wool keratin/cellulose blended materials directly.

ON THE BINDING OF CONGO RED BY AMYLOID

1962-05-01

Holde Puchtler , Faye Sweat , Monroe I. Levine

Congo red in alkaline 80% ethyl alcohol solution saturated with NaCl stains amyloid selectively. The distribution of the dye is very similar to that observed in serial sections stained with … Congo red in alkaline 80% ethyl alcohol solution saturated with NaCl stains amyloid selectively. The distribution of the dye is very similar to that observed in serial sections stained with Highman's Congo red method. In sections stained with Congo red in aqueous or alcoholic solutions without differentiation all tissue structures are intensely colored, but only amyloid is dichroic. The rapid removal of dye by alkaline solutions from structures other than amyloid suggests ionic or salt-type bonds between Congo red and these structures. In contrast, the binding of Congo red by amyloid from alkaline alcoholic solutions and the increase in intensity of staining upon addition of NaCl indicate a non-ionic type linkage between amyloid and dye. The effects of deamination, acetylation and various oxidation procedures on the binding of Congo red indicate interaction of the dye with hydroxyl groups of amyloid. According to data on the direct dyeing of cellulose in textile dyeing, Congo red is adsorbed by hydrogen bonding between hydroxyl groups of the polysaccharide chains and the amino groups of the dye. It seems probable that a similar mechanism is involved in the binding of Congo red by amyloid. It is suggested that the selective staining of amyloid with Congo red is due to steric configurations of amyloid or one of its components which favor non-ionic binding of the eye.

X-Ray studies of the structure of hair, wool, and related fibres. II.- the molecular structure and elastic properties of hair keratin

1933-05-17

W. T. ASTBURY , H. J. Woods

In a previous communication* an account was given of a preliminary exploration, chiefly by X-ray methods, of the problem of the molecular structure of animal hairs. The present paper is … In a previous communication* an account was given of a preliminary exploration, chiefly by X-ray methods, of the problem of the molecular structure of animal hairs. The present paper is a natural continuation of the record, in which earlier tentative suggestions are either confirmed or rejected, and an attempt is made to lay bare the general structural principles underlying the properties of the protein, keratin . It will be unnecessary here to outline once more the historical development of the subject; we shall proceed at once to the main point of this introductory section, which is to give what appears to be the solution of the problem before setting out in detail the experimental facts and arguments leading up to it. Such a procedure is advisable because of the complex nature of the properties under discussion ; such a long series of experiments have been involved in their elucidation, that without some sort of preliminary statement of the chief conclusions, the issue is apt to grow confused.

The antimicrobial activity of cotton fabrics treated with different crosslinking agents and chitosan

2005-05-06

Khaled El‐Tahlawy , Magda A. El‐Bendary , Alaa Elhendawy +1 more

The Physical Chemistry of Dyeing

1973-05-01

Francis Jones

A review on developments in dyeing cotton fabrics with reactive dyes for reducing effluent pollution

2014-09-16

Awais Khatri , Mazhar Hussain Peerzada , Muhammad Mohsin +1 more

Perspectives for natural product based agents derived from industrial plants in textile applications – a review

2013-06-15

Shahid‐ul‐Islam , Mohammad Shahid , Faqeer Mohammad

A review on the application of inorganic nano-structured materials in the modification of textiles: Focus on anti-microbial properties

2010-03-31

Roya Dastjerdi , Majid Montazer

A Review of Keratin-Based Biomaterials for Biomedical Applications

2010-02-03

Jillian G. Rouse , Mark Van Dyke

Advances in the extraction, purification, and characterization of keratin proteins from hair and wool fibers over the past century have led to the development of a keratin-based biomaterials platform. Like … Advances in the extraction, purification, and characterization of keratin proteins from hair and wool fibers over the past century have led to the development of a keratin-based biomaterials platform. Like many naturally-derived biomolecules, keratins have intrinsic biological activity and biocompatibility. In addition, extracted keratins are capable of forming self-assembled structures that regulate cellular recognition and behavior. These qualities have led to the development of keratin biomaterials with applications in wound healing, drug delivery, tissue engineering, trauma and medical devices. This review discusses the history of keratin research and the advancement of keratin biomaterials for biomedical applications.

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Production, Characterization and Treatment of Textile Effluents: A Critical Review

2013-01-01

AE Ghaly R Ananthashankar

Textile industry is one of the major industries in the world that provide employment with no required special skills and play a major role in the economy of many countries. … Textile industry is one of the major industries in the world that provide employment with no required special skills and play a major role in the economy of many countries. There are three different types of fibres used in the manufacture of various textile products: cellulose fibres, protein fibres and synthetic fibres. Each type of fibre is dyed with different types of dyes. Cellulose fibres are dyed using reactive dyes, direct dyes, napthol dyes and indigo dyes. Protein fibres are dyed using acid dyes and lanaset dyes. Synthetic fibres are dyed using disperse dyes, basic dyes and direct dyes. The textile industry utilizes various chemicals and large amount of water during the production process. About 200 L of water are used to produce 1 kg of textile. The water is mainly used for application of chemicals onto the fibres and rinsing of the final products. The waste water produced during this process contains large amount of dyes and chemicals containing trace metals such as Cr, As, Cu and Zn which are capable of harming the environment and human health. The textile waste water can cause haemorrhage, ulceration of skin, nausea, skin irritation and dermatitis. The chemicals present in the water block the sunlight and increase the biological oxygen demand thereby inhibiting photosynthesis and reoxygenation process. The effluent water discharged from the textile industries undergoes various physio-chemical processes such as flocculation, coagulation and ozonation followed by biological treatments for the removal of nitrogen, organics, phosphorous and metal. The whole treatment process involves three steps: primary treatment, secondary treatment and tertiary treatment. The primary treatment involves removal of suspended solids, most of the oil and grease and gritty materials. The secondary treatment is carried out using microorganisms under aerobic or anaerobic conditions and involves the reduction of BOD, phenol and remaining oil in the water and control of color. The tertiary treatment involves the use of electrodialysis, reverse osmosis and ion exchange to remove the final contaminants in the wastewater. The major disadvantages of using the biological process are that the presence of toxic metals in the effluent prevents efficient growth of microorganisms and the process requires a long retention time. The advanced oxidation processes is gaining attention in the recent days due to the ability to treat almost all the solid components in the textile effluents. The photo oxidation of the effluents is carried out using H2O2, combination of H2O2 and UV and Combination of TiO2 and UV. Advanced oxidation process generates low waste and uses hydroxyl radicals (OHA¢Â—Â) as their main oxidative power. The hydroxyl radicals (OHA¢Â—Â) are produced by chemical, electrical, mechanical or radiation energy and therefore advanced oxidation processes are classified under chemical, photochemical, catalytic, photocatalytic, mechanical and electrical processes. The effluents treated with advanced oxidation process were found to reduce 70-80% COD when compared to 30-45% reduction in biological treatment.

Antimicrobial activity of some natural dyes

2004-11-13

Rajni Singh , Astha Jain , Shikha Panwar +2 more

Recent Advances in Antimicrobial Treatments of Textiles

2008-01-01

Yuan Gao , Robin Cranston

The growth of microbes on textiles during use and storage negatively affects the wearer as well as the textile itself. The detrimental effects can be controlled by durable antimicrobial finishing … The growth of microbes on textiles during use and storage negatively affects the wearer as well as the textile itself. The detrimental effects can be controlled by durable antimicrobial finishing of the textile using broad-spectrum biocides or by incorporating the biocide into synthetic fibers during extrusion. Consumers' attitude towards hygiene and active lifestyle has created a rapidly increasing market for antimicrobial textiles, which in turn has stimulated intensive research and development. This article reviews the requirements for antimicrobial finishing, qualitative and quantitative evaluations of antimicrobial efficacy, the application methods of antimicrobial agents and some of the most recent developments in antimicrobial treatments of textiles using various active agents such as silver, quaternary ammonium salts, polyhexamethylene biguanide, triclosan, chitosan, dyes and regenerable N-halamine compounds and peroxyacids. Examples of commercial antimicrobial products are presented to illustrate the active agents used and their finishing methods.

Characterisation of textile wastewaters ‐ a review

1994-10-01

V Correia , Tom Stephenson , Simon Judd

Abstract The characteristics of wastewater from textile processing operations are comprehensively reviewed. The categorisation of wastewaters proceeds through a consideration of the nature of the various industrial processes employed by … Abstract The characteristics of wastewater from textile processing operations are comprehensively reviewed. The categorisation of wastewaters proceeds through a consideration of the nature of the various industrial processes employed by the industry and the chemicals associated with these operations. Chemical pollutants arise both from the raw material itself and a broad range of additives used to produce the finished product. The industrial categories considered include sizing and desizing, weaving, scouring, bleaching, mercerizing, carbonizing, fulling, dyeing and finishing. Pollutants of concern range from non‐biodegradable highly‐coloured organic dyes to pesticides from special finishes such as insect‐proofing. It is evident that the textile wastewater chemical composition is subject to considerable change due to both the diversity in the textile processes employed and the range of chemicals employed within each industrial category.

Antimicrobial Approaches for Textiles: From Research to Market

2016-06-21

D.S. Morais , Rui Miranda Guedes , M.A. Lopes

The large surface area and ability to retain moisture of textile structures enable microorganisms’ growth, which causes a range of undesirable effects, not only on the textile itself, but also … The large surface area and ability to retain moisture of textile structures enable microorganisms’ growth, which causes a range of undesirable effects, not only on the textile itself, but also on the user. Due to the public health awareness of the pathogenic effects on personal hygiene and associated health risks, over the last few years, intensive research has been promoted in order to minimize microbes’ growth on textiles. Therefore, to impart an antimicrobial ability to textiles, different approaches have been studied, being mainly divided into the inclusion of antimicrobial agents in the textile polymeric fibers or their grafting onto the polymer surface. Regarding the antimicrobial agents, different types have been used, such as quaternary ammonium compounds, triclosan, metal salts, polybiguanides or even natural polymers. Any antimicrobial treatment performed on a textile, besides being efficient against microorganisms, must be non-toxic to the consumer and to the environment. This review mainly intends to provide an overview of antimicrobial agents and treatments that can be performed to produce antimicrobial textiles, using chemical or physical approaches, which are under development or already commercially available in the form of isolated agents or textile fibers or fabrics.

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Industrial dyes : chemistry, properties, applications

2003-01-01

Klaus Hunger

Preface. List of Contributors. Dyes, General Survey. Important Chemical Chromophores of Dye Classes. Dye Classes for Principal Applications. Textile Dyeing. Nontextile Dyeing. Functional Dyes. Optical Brighteners. Health and Safety Aspects. … Preface. List of Contributors. Dyes, General Survey. Important Chemical Chromophores of Dye Classes. Dye Classes for Principal Applications. Textile Dyeing. Nontextile Dyeing. Functional Dyes. Optical Brighteners. Health and Safety Aspects. List of Examples of Commercially Available Dyes. Index.

Natural Colorants: Historical, Processing and Sustainable Prospects

2017-01-16

Mohd Yusuf , Mohd Shabbir , Faqeer Mohammad

With the public's mature demand in recent times pressurized the textile industry for use of natural colorants, without any harmful effects on environment and aquatic ecosystem, and with more developed … With the public's mature demand in recent times pressurized the textile industry for use of natural colorants, without any harmful effects on environment and aquatic ecosystem, and with more developed functionalities simultaneously. Advanced developments for the natural bio-resources and their sustainable use for multifunctional clothing are gaining pace now. Present review highlights historical overview of natural colorants, classification and predominantly processing of colorants from sources, application on textiles surfaces with the functionalities provided by them. Chemistry of natural colorants on textiles also discussed with relevance to adsorption isotherms and kinetic models for dyeing of textiles.

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Science and information theory

1956-11-01

S. Charp

Keratin: dissolution, extraction and biomedical application

2017-01-01

Amin Shavandi , Tiago H. Silva , Adnan A. Bekhit +1 more

A comprehensive review that compared the properties of keratin extracted by different extraction methods and investigated keratin suitability for biomedical applications. A comprehensive review that compared the properties of keratin extracted by different extraction methods and investigated keratin suitability for biomedical applications.

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A review of textile industry: Wet processing, environmental impacts, and effluent treatment methods

2018-03-01

Sughosh Madhav , Arif Ahamad , Pardeep Singh +1 more

Abstract The word “textile” means to weave and was taken from the Latin word “texere.” Nowadays, textiles not only fulfill humankind's basic necessity for clothing, they also allow individuals to … Abstract The word “textile” means to weave and was taken from the Latin word “texere.” Nowadays, textiles not only fulfill humankind's basic necessity for clothing, they also allow individuals to make fashion statements. As one of the oldest industries, the textile industry occupies a unique place in India. It is responsible for 14% of the total industrial manufacture in India. However, the textile industry is also considered to be one of the biggest threats to the environment. Pretreatment, dyeing, printing, and finishing operations are among the various stages of the industrial textile manufacturing process. These fabrication operations not only utilize huge quantities of power and water, they also generate considerable amounts of waste. The textile industry utilizes a number of dyes, chemicals, and other materials to impart the required qualities to the fabrics. These operations produce a significant amount of effluents. The quality of effluents is such that they cannot be put to other uses, and they can create environmental problems if they are disposed of without appropriate treatment. This review discusses different textile processing stages, pollution problems associated with these stages, and their eco‐friendly alternatives. Textile wet processing is described in detail, as it is the key process in the industry and it also generates the greatest amount of pollutants in textile processing. The environmental impact of textile effluents is discussed, as textile effluents not only impose negative effects on the quality of water and soil, they also imperil plant and animal health. In this paper, various methods for treating textile effluents are described. Discussion of physical, chemical, biological, and advanced treatment technologies of effluent treatment are included in this paper.

Cosmetics Preservation: A Review on Present Strategies

2018-06-28

Noureddine Halla , Isabel P. Fernandes , Sandrina A. Heleno +6 more

Cosmetics, like any product containing water and organic/inorganic compounds, require preservation against microbial contamination to guarantee consumer’s safety and to increase their shelf-life. The microbiological safety has as main goal … Cosmetics, like any product containing water and organic/inorganic compounds, require preservation against microbial contamination to guarantee consumer’s safety and to increase their shelf-life. The microbiological safety has as main goal of consumer protection against potentially pathogenic microorganisms, together with the product’s preservation resulting from biological and physicochemical deterioration. This is ensured by chemical, physical, or physicochemical strategies. The most common strategy is based on the application of antimicrobial agents, either by using synthetic or natural compounds, or even multifunctional ingredients. Current validation of a preservation system follow the application of good manufacturing practices (GMPs), the control of the raw material, and the verification of the preservative effect by suitable methodologies, including the challenge test. Among the preservatives described in the positive lists of regulations, there are parabens, isothiasolinone, organic acids, formaldehyde releasers, triclosan, and chlorhexidine. These chemical agents have different mechanisms of antimicrobial action, depending on their chemical structure and functional group’s reactivity. Preservatives act on several cell targets; however, they might present toxic effects to the consumer. Indeed, their use at high concentrations is more effective from the preservation viewpoint being, however, toxic for the consumer, whereas at low concentrations microbial resistance can develop.

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Adsorption of reactive dyes on lignocellulosic waste; characterization, equilibrium, kinetic and thermodynamic studies

2019-03-26

Gökçe Didar Değermenci̇ , Nejdet Değermenci̇ , Vefa Ayvaoğlu +3 more

Textile finishing dyes and their impact on aquatic environs

2019-11-01

Mohamed Berradi , Rachid Hsissou , Mohammed Hussein Rafeq Khudhair +4 more

In the present review, we have been able to describe the different families of dyes and pigments used in textile finishing processes (Yarns, fabrics, nonwovens, knits and rugs) such as … In the present review, we have been able to describe the different families of dyes and pigments used in textile finishing processes (Yarns, fabrics, nonwovens, knits and rugs) such as dyeing and printing. These dyes are reactive, direct, dispersed, indigo, sulphur and vats. Such that their presence in the liquid effluents resulting from the textile washing constitutes a serious risk, in the absence of their purification, for the quality of receiving aquatic environments. Indeed, the presence of these dyes and pigments can cause a significant alteration in the ecological conditions of the aquatic fauna and flora, because of the lack of their biodegradability. This has a negative impact on the equilibrium of the aquatic environment by causing serious dangers, namely the obvious dangers (Eutrophication, under-oxygenation, color, turbidity and odor), the long-term dangers (Persistence, bioaccumulation of carcinogenic aromatic products and formation of by-products of chlorination), mutagenicity and carcinogenicity.

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Classifications, properties, recent synthesis and applications of azo dyes

2020-01-01

Said Benkhaya , Souad M’rabet , Ahmed El Harfi

In this work, we have presented a very detailed review of the different classification of azo dyes as a function of the number of azo groups and the appropriate functional … In this work, we have presented a very detailed review of the different classification of azo dyes as a function of the number of azo groups and the appropriate functional groups. Then we pointed out some chemical properties of these dyes such as reactivity, isomerization and tautomerism and listed. In the following, we have summarized some recent syntheses of azo dyes and the mechanism of azo dye/polymer conjugation. Finally, we indicate the principle of Gewald's reaction and its application to the synthesis of new azo dyes.

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A review on classifications, recent synthesis and applications of textile dyes

2020-03-19

Said Benkhaya , Souad M' rabet , Ahmed El Harfi

Keratin - Based materials for biomedical applications

2020-04-16

Sandleen Feroz , Nawshad Muhammad , Jithendra Ratnayake +1 more

Keratin constitutes the major component of the feather, hair, hooves, horns, and wool represents a group of biological material having high cysteine content (7–13%) as compared to other structural proteins. … Keratin constitutes the major component of the feather, hair, hooves, horns, and wool represents a group of biological material having high cysteine content (7–13%) as compared to other structural proteins. Keratin -based biomaterials have been investigated extensively over the past few decades due to their intrinsic biological properties and excellent biocompatibility. Unlike other natural polymers such as starch, collagen, chitosan, the complex three-dimensional structure of keratin requires the use of harsh chemical conditions for their dissolution and extraction. The most commonly used methods for keratin extraction are oxidation, reduction, steam explosion, microbial method, microwave irradiation and use of ionic liquids. Keratin -based materials have been used extensively for various biomedical applications such as drug delivery, wound healing, tissue engineering. This review covers the structure, properties, history of keratin research, methods of extraction and some recent advancements related to the use of keratin derived biomaterials in the form of a 3-D scaffold, films, fibers, and hydrogels.

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Cleaner dyeing of textiles using plasma treatment and natural dyes: A review

2020-04-30

Aminoddin Hajı , Maryam Naebe

Organic Chemistry in Colour

1983-12-31

P. F. Gordon , Peter Gregory

Chemical and Physical Behavior of Human Hair

2002-01-01

Clarence R. Robbins

Nucleation in Condensed Matter - Applications in Materials and Biology

2010-01-01

K. F. Kelton , A. L. Greer

Paint flow and pigment dispersion

1964-01-01

Temple C. Patton

Paint flow and pigment dispersion , Paint flow and pigment dispersion , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی Paint flow and pigment dispersion , Paint flow and pigment dispersion , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

A systematic review of natural colourants and trend forecasting practices for the textile and fashion industry

2025-06-24

Bintan Titisari , Pammi Sinha | Coloration Technology

Abstract Recent global interest in sustainable practices in the textile and fashion industry has inspired stakeholders to readopt natural colourants. However, integrating these practices raises several questions regarding the latest … Abstract Recent global interest in sustainable practices in the textile and fashion industry has inspired stakeholders to readopt natural colourants. However, integrating these practices raises several questions regarding the latest developments in natural colourant and trend forecasting practices in the textile and fashion industry. It also prompts inquiries about how to incorporate the use of natural colourants into current industry, and the role of the trend forecasting industry in this. Colour decisions, first in the fashion design process, are influenced by the designer's creativity, forecasted trends and factory capabilities. A systematic literature review was conducted to examine the latest developments in natural colourants and trend forecasting for the textile and fashion industry. This was compared with a desk‐based review of current trend forecasting practices. Five topics emerged from the examination of the literature of natural colourants: natural colourant sources; colouration technology; the application of natural colourants; culture and tradition; and industrialising natural colourants. Meanwhile, four areas arose from the literature of trend forecasting: technology, process, business and society. The in‐depth analysis of natural colourant literature focused on “industrialising natural colourants” papers and discovered four key themes: industry scalability; consumer behaviour; economic value; and marketing and promotion. Comparison across these reviews identified opportunities for incorporating natural colourants through technology, marketing and education, supported by trend forecasting practices. Further research and significant adjustments in the industry are crucial, either to facilitate the integration of natural colourants into existing systems or to determine whether parallel standards and tools need to be developed.

Investigations on the migration properties of acid dyes in the dyeing of polyamide microfibre

2025-06-24

Xun Xu , Ren‐Cheng Tang | Coloration Technology

Abstract Retarding the uptake rate of dyes and enhancing the migration ability of dyes are two basic measures to be taken to improve the dyeing levelness of polyamide microfibre. In … Abstract Retarding the uptake rate of dyes and enhancing the migration ability of dyes are two basic measures to be taken to improve the dyeing levelness of polyamide microfibre. In this work, the migration properties of acid dyes during the dyeing of polyamide microfibre were discussed. The effects of the category and molecular mass of dyes, and the conditions of dyeing (pH, temperature, dye concentration, and auxiliaries) on dye migration were evaluated, and the ability of dye migration on polyamide microfibre, wool, and silk was compared. Acid dyes had lower migration ability on polyamide microfibre than on wool and silk. The migration ability of different varieties of dyes displayed great differences, and decreased in the following order: acid levelling dyes > acid half‐milling/milling dyes > 1:2 metal complex dyes. The migration percentage of acid dyes increased with increasing pH, temperature and dye concentration. Various types of surfactants displayed different degrees of ability in enhancing the migration of acid half‐milling/milling dyes. Fatty amine polyoxyethylene ether (weakly cationic) had the strongest promoting effect on the migration of dyes, followed by sodium alcohol ether sulphate (anionic) and fatty alcohol polyoxyethylene ether (nonionic), while amphoteric surfactants displayed a minor promoting effect. Notably, in the migration test, the migration percentage of dyes was significantly linearly correlated with the extent of dye desorption from fibres.

Determination of Biological Activities of Wood Samples Impregnated with Multi-Functional Compounds and Synergistic Effect Analysis Based on Fungal Resistance

2025-06-24

Ayşenur Gürgen , Sibel Yıldız , Sabrina Palantı | International Journal of Chemistry and Technology

In this study, the biological resistance of Scotch pine (Pinus sylvestris) and beech (Fagus orientalis) wood samples which impregnated with individual and combinations of multi-functional compounds. Artificial antioxidant (A), GRAS … In this study, the biological resistance of Scotch pine (Pinus sylvestris) and beech (Fagus orientalis) wood samples which impregnated with individual and combinations of multi-functional compounds. Artificial antioxidant (A), GRAS compounds (G) and nano-SiO2 (N) were chosen as multi-functional compounds. Firstly, the wood samples were impregnated single, binary and ternary combinations of impregnation solutions. Larvicidial resistance of pine samples was investigated against to Hylotrupes bajulus. Termitidicial resistance of all samples were determined using Subterranean termites Reticulitermes. Also, Gloeophyllum trabeum and Poria placenta were used for fungal resistance of beech and pine samples, respectively. Synergistic effects were calculated based on the fungal results. It was concluded that binary combinations of A+G and G+N and also the ternary combination (A+G+N) have a synergistic effect in binary variations for pine wood samples while A+G and A+N binary combinations show synergistic effect for beech wood samples. In addition, it is seen that the ternary combination also has a synergistic effect as in beech wood samples.

Bibliometric analysis of Indigofera-based natural dyes in the Asia–Pacific: research trends and future directions

2025-06-23

Nurul Syazwani Zahari , Siti Fatimah Sabran | Discover Sustainability

Performance analysis of different types of cellulase enzyme washed denim using sustainable and conventional washing machine

2025-06-23

Md. Mehedi Hasan , Foyej Ahmed , Md. Al Amin | Research Square (Research Square)

<title>Abstract</title> The textile industry continually seeks environmentally friendly and sustainable practices to reduce its ecological footprint. This study investigates the effects of enzymatic wash treatments on denim fabric using both … <title>Abstract</title> The textile industry continually seeks environmentally friendly and sustainable practices to reduce its ecological footprint. This study investigates the effects of enzymatic wash treatments on denim fabric using both conventional and sustainable machine processes. Enzymes, known for their eco-friendly characteristics, are employed to enhance the aesthetic appeal of denim while minimizing the environmental impact associated with traditional finishing methods. The research involves the application of various enzymes, including Enzymatic DM8639B, Enzymatic DM8642, on denim fabric. Conventional washing machines, commonly used in the textile industry, are compared with innovative sustainable machines designed to optimize water and energy consumption. The study assesses the effectiveness of enzymatic treatments in terms of Washing, Rubbing, and Saliva, Tensile Strength, crucial factors influencing denim quality. Additionally, the environmental impact of both processes is analyzed, considering water usage, energy consumption, and chemical waste generation. Sustainability metrics such as carbon footprint and water footprint are employed to evaluate the eco-friendliness of each method. The findings aim to provide insights into the feasibility of integrating sustainable machine processes into denim production, offering a potential avenue for reducing the environmental impact of garment finishing. This research contributes to the ongoing efforts to develop sustainable practices within the textile industry, aligning with global initiatives for a more environmentally conscious and responsible approach to manufacturing.

Innovative Sorting for Sustainable Futures: Fiber Identification Technologies Tested in California to Drive Textile Circularity

2025-06-23

Joanne Brasch , May Myo Myint , Yalin Li | Journal of Advanced Manufacturing and Processing

ABSTRACT Textiles is a growing waste stream ripe with opportunities for better materials management and promotion of businesses aligned with textile reuse and repair. The California Product Stewardship Council (CPSC) … ABSTRACT Textiles is a growing waste stream ripe with opportunities for better materials management and promotion of businesses aligned with textile reuse and repair. The California Product Stewardship Council (CPSC) is leading textile policy development and textile recovery projects focused on expanding circular fiber systems with reduced cost burden on local government and taxpayers through extended producer engagement. Innovative fiber identification and pre‐processing solutions are needed to enhance the efficiency and efficacy of Materials Recovery Facilities. Various textile scanning technologies are available on the market, with Near‐Infrared Spectroscopy (NIR) emerging as the most promising and market‐ready option due to its wide use in solid waste and recycling contexts. The article compares multiple NIR‐based fiber identification devices tested in CPSC's recent pilot projects to provide a comprehensive overview of the current market landscape. The article discusses the potentials of handheld and tabletop devices in comparison to large‐capacity machines, and challenges for accurate fiber identification due to the diverse nature of textile waste, including complex fabric blends, multi‐layers, and the presence of disruptors such as prints, embroidery, and zippers. Industry‐wide collaboration and the establishment of regulations and standards are required to overcome the current technical and economic challenges in textile circularity. The article will present recommendations for data collection, transparency, and accountability in the industry, and will discuss the role of policy development in creating economic incentives such as financial support, tax incentives, or subsidies for MRFs investing in state‐of‐the‐art scanning solutions to expedite the transition toward more sustainable and efficient circular economy practices.

Agricultural Waste-Derived Cellulose/ZnO Composites: Dual Photocatalytic and Adsorptive Action for Textile Dye Removal

2025-06-22

Jihene Belhaj , Ramzi Khiari , Valentín García-Caballero +2 more | Polymers

The synthesis of cellulose extracted from agricultural waste, specifically almond and fig tree trimmings, and its combination with ZnO nanoparticles to form cellulose/ZnO composites was studied. These adsorbents/photocatalysts were fully … The synthesis of cellulose extracted from agricultural waste, specifically almond and fig tree trimmings, and its combination with ZnO nanoparticles to form cellulose/ZnO composites was studied. These adsorbents/photocatalysts were fully characterized, confirming not only the effective deposition of zinc oxide nanoparticles on the cellulose surface but also the improvement in homogeneity and lower agglomeration and size of ZnO particles grown on these fibers (crystallites were 43 ± 12 nm for pristine ZnO and 13–26 nm for composites). The efficacy of these composites was evaluated against methylene blue (MB), methyl orange (MO), and bromophenol blue (BB), this study being the first time that BB removal results have been reported using dual photo-adsorptive cellulosic composites. After 20 min, removals of approximately 45% were achieved for the anionic dyes MO and BB under UV light and up to 65% for MB with either applied radiation, indicating a clear adsorption mechanism for this cationic dye. A reusability study was conducted for the BB removal system, with only a 15–19% loss in BB removal capacity under UV irradiation after the third reuse. These results demonstrated the potential and efficiency of cellulose/ZnO composites as promising photocatalysts for textile wastewater treatment, providing a sustainable and interesting approach to mitigate dye pollution.

A sustainable innovative approach for disperse printing of polyester fabrics: Utilisation of essential oils extracted from plants as carrier

2025-06-22

Rıza Atav , Bora Yıldırım , Özge Çolakoğlu Havare +2 more | Coloration Technology

Abstract It is known that polyester fibres constitute the most important fibre group in the world. The absence of functional groups in the structure of these fibres, the fact that … Abstract It is known that polyester fibres constitute the most important fibre group in the world. The absence of functional groups in the structure of these fibres, the fact that they are very hydrophobic and that their structures are very tight, makes it difficult to colour them. To facilitate the penetration of the dye into the fibre, the fibre structure must first be loosened. This is achieved by fixing at high temperatures and by special auxiliaries added to the printing paste. Thanks to the auxiliaries expressed as carriers, the dye uptake of polyester fibres increases. However, carriers cause various environmental problems as synthetic substances. In this study, the use of ecological plant‐based essential oils as carrier in the printing of polyester fabrics with disperse dyes was tried. The effects of adding different essential oils to the printing paste instead of carrier in disperse printing processes of polyester fabrics on fabric strength and colour yield, degree of transition to the back, levelness and fastness properties in printing, were investigated. Furthermore, the effects of adding various essential oils into the printing paste on obtaining various functionalities (ie, ultraviolet protection and anti‐bacterial activity) were also tested.

Exploring the characteristics and transformation of aromatic halogenated compounds in textile dyeing sludge during Fe2+-based chemical treatment

2025-06-21

Xiaojun Lai , Wenbo Liang , Shuwen Han +2 more | Journal of Hazardous Materials

Low-temperature dyeing of recycled polyester fibers using COUMARIN as eco-friendly carrier

2025-06-21

Abdur Rehman , Maryam Naveed , Muhammad Irfan Siyal | Chemical Papers

Optimizing the Processing Temperature for Synthesis of Silver Nanoparticles within Cellulose-Wool Keratin supramolecular Matrix using Butylmethylimmidazolium Chloride Ionic Liquid

2025-06-20

Ngesa Ezekiel Mushi | Tanzania Journal of Engineering and Technology

To date, the synthesis of silver nanoparticles on the surface of cellulose and wool keratin biopolymer, while dissolved in ionic liquid, is attractive because of its biomedical potential. However, the … To date, the synthesis of silver nanoparticles on the surface of cellulose and wool keratin biopolymer, while dissolved in ionic liquid, is attractive because of its biomedical potential. However, the optimal processing temperature for the nanoparticle formation is unclear. The previously reported temperature of approximately 120°C gives unpredictable results. The current study employs a combination of 50% cellulose and 50% keratin, along with 69 mg of silver chloride, in Butylmethylimidazolium Chloride BMImCl ionic liquid, using a single pot process to produce a supramolecular film via non-derivatized mechanochemical interactions. The primary objective is to experimentally establish the processing temperature to achieve stable growth of metallic silver nanoparticles. The synthesis was conducted by heating the ionic mixture at temperatures of 110°C, 120°C, and 130°C. The study observed that raising the temperature to around 130ºC for 5 min is more practical. Moreover, though this data is higher, it does not compromise the thermal stability of cellulose and keratin's structure. The structural properties of the nanoparticles have been confirmed using Fourier transform spectroscopy (FTIR) and scanning electron microscopy (SEM). Furthermore, energy-dispersive X-ray spectroscopy (EDS) and powder X-ray diffraction (XRD) provide valuable insights into the physical characteristics of the produced silver nanoparticles, with a diameter of around 8.5 nm, and are uniformly distributed in-plane within the matrix. While the underlying mechanisms remain uncertain, they likely involve anchoring ionic silver onto the wool keratin while dissolved within the ionic liquid at elevated temperatures before reducing to metallic silver at room temperatures. Besides being sustainable, this green approach enhances understanding of the possibility of creating stable silver nanoparticles within the supramolecular matrix, which is essential for future applications in the biomedical field.

Optimizing the Processing Temperature for Synthesis of Silver Nanoparticles within Cellulose-Wool Keratin supramolecular Matrix using Butylmethylimmidazolium Chloride Ionic Liquid

2025-06-20

Ngesa Mushi | Tanzania Journal of Engineering and Technology

To date, the synthesis of silver nanoparticles on the surface of cellulose and wool keratin biopolymer, while dissolved in ionic liquid, is attractive because of its biomedical potential. However, the … To date, the synthesis of silver nanoparticles on the surface of cellulose and wool keratin biopolymer, while dissolved in ionic liquid, is attractive because of its biomedical potential. However, the optimal processing temperature for the nanoparticle formation is unclear. The previously reported temperature of approximately 120°C gives unpredictable results. The current study employs a combination of 50% cellulose and 50% keratin, along with 69 mg of silver chloride, in Butylmethylimidazolium Chloride BMImCl ionic liquid, using a singlepot process to produce a supramolecular film via non-derivatized mechanochemical interactions. The primary objective is to experimentally establish the processing temperature to achieve stable growth of metallic silver nanoparticles. The synthesis was conducted by heating the ionic mixture at temperatures of 110°C, 120°C, and 130°C. The study observed that raising the temperature to around 130ºC for 5 min is more practical. Moreover, though this data is higher, it does not compromise the thermal stability of cellulose and keratin's structure. The structural properties of the nanoparticles have been confirmed using Fourier transform spectroscopy (FTIR) and scanning electron microscopy (SEM). Furthermore, energy-dispersive X-ray spectroscopy (EDS) and powder X-ray diffraction (XRD) provide valuable insights into the physical characteristics of the produced silver nanoparticles, with a diameter of around 8.5 nm, and are uniformly distributed in-plane within the matrix. While the underlying mechanisms remain uncertain, they likely involve anchoring ionic silver onto the wool keratin while dissolved within the ionic liquid at elevated temperatures before reducing to metallic silver at room temperatures. Besides being sustainable, this green approach enhances understanding of the possibility of creating stable silver nanoparticles within the supramolecular matrix, which is essential for future applications in the biomedical field.

Design and Technological Optimization of Cosmetic Sticks Enriched with Antibacterial Sage Extract

2025-06-20

Keteven Natobidze , Mariam Gasanova , Ia Tsurtsumia +2 more | GEORGIAN SCIENTISTS

Cotton Coloration Using Holy Basil Leaves Extracts

2025-06-20

Tanvir Ahmed Chowdhury , Jahirul Islam Khandaker , M. A. Gafur +4 more | ACS Omega

Preparation and Dyeability of Lyocell Fabric with Structural Color for Apparel Application

2025-06-20

Rashid Hussain Memon , Zeeshan Khatri , Farooq Ahmed +1 more | Materials Research Express

Abstract Conventional dye-based coloration in textile often suffers from concerns related to environmental pollution, fading, and resource intensive processes. In contrast, bio inspired structural colors, which arise from nanoscale interaction … Abstract Conventional dye-based coloration in textile often suffers from concerns related to environmental pollution, fading, and resource intensive processes. In contrast, bio inspired structural colors, which arise from nanoscale interaction with light, offer a sustainable and durable alternative for fabric coloration. Thus, nanostructured coloration offers various advantages such as operational stability, eco-friendly dyeing, and multiple functions like nontoxic with antibacterial properties. Herein, lyocell fabric was dyed with structural colors at different temperatures, times, and concentrations. The three basic colors red, yellow, and blue were produced from silver nanoparticles using structural color technique. These basic colors were blend to produce more secondary bright colors. The lyocell fabric was initially coated with sodium alginate to enhance the color depth of lyocell fabric. The silver nanoparticle synthesized structural color was applied onto sodium alginate-coated lyocell fabric by simple batch process. The lyocell fabric demonstrated a strong ability to adsorb silver nanoparticles during the coloration process, resulting in modified dyed fabric displaying bright colors with excellent color yield depending on the nanoparticle shapes. The results validate that silver nanoparticle based structural coloration provides a durable and eco-friendly alternative to conventional dyeing methods. This green structural coloration approach not only offers an eco-friendly substitute to conventional dyes but also holds strong potential for application in the apparel industry, were durable, vivid, and non-toxic coloration is extremely desirable.

Surfactants Increase the Durability and Antibacterial Performance of ZnO-Coated Cotton

2025-06-19

Kranti Kachare , Shital S. Shendage , Nanasaheb M. Shinde +4 more | ACS Applied Nano Materials

Development of functional textiles with flavone dye of ginkgo biloba exocarp and study on dyeing properties

2025-06-19

Xuemei Wang , Yusheng Lei , Hudie Zhao +4 more | Sustainable Chemistry and Pharmacy

Method to analyse and quantify the propensity of hair dyes to desorb from human hair fibre

2025-06-19

Kristina Hetherington , Alenka Tidder , Bethany J. Tack +7 more | Heliyon

Cutting edge for technical textiles (fluorescent, antibacterial and UV-protective) by incroporation of thienoisoquinoline-quinazoline derivatives

2025-06-19

Walid Sharmoukh , Islam S. Marae , Etify A. Bakhite +2 more | BMC Chemistry

Abstract Nowadays design of multi-functionalized textiles as technical textiles is highly demanded to be applied in different environments and under hard weather condition. Herein, tri-functionalized (fluorescent, antimicrobial and UV-protection) cotton … Abstract Nowadays design of multi-functionalized textiles as technical textiles is highly demanded to be applied in different environments and under hard weather condition. Herein, tri-functionalized (fluorescent, antimicrobial and UV-protection) cotton textiles were designed by immobilization of heterocyclic compounds based on quinazoline derivatives ( QDs ). Firstly, four quinazoline derivatives ( QD-1 = H, QD-2 = O–CH 3 , QD-3 = Cl, QD-4 = H [ without COOH ]) were synthesized for the first time starting from 2-(chloromethyl) quinazoline-4(3H)-one. The chemical structure of all obtained QDs were investigated by NMR ( 1 H & 13 C) and infrared spectroscopy, in addition to the measurement of melting points, yields and emission spectra. Secondly, the synthesized QDs were immobilized within cotton textile, while cotton was per-activated by interaction with cationic reagent. The modified textiles (QDs@Q-cotton) gained dark yellow color. The QDs@Q-cotton emitted greenish radiation and showed intense emission fluorescence at 485–521 nm. Good–very good (UPF = 23.6–32.8) and good (21.3–25.8) UV protection was respectively shown for QDs@Q-cotton before and after 10 washings. The protection from UV radiation for QDs@Q-cotton is attributed to the reflection of UV radiation by effect of QDs micro particles which deposited within the cotton matrix. The modified textiles exhibited antimicrobial action against S. aureus and E. coli bacteria, while the mortality was 79.9–89.1% and 69.7–76.2% before and after 10 washings, respectively. The antibacterial activity of the QDs@Q-cotton fabrics is attributed to the QDs skeleton. The highest antibacterial action for QD-3@Q-cotton is related to the chlorine derivative. The multi-functionalized textile with good durability could be successfully employed in the military/soldiers clothes.

D-phase Emulsification of Neem Oil and its Application on Cotton and Silk using Response Surface Methodology

2025-06-19

Harshal Patil , Ashok Athalye | Journal of the Indian Chemical Society

Optimization of Process of Dyeing Alpaca Yarn Using Indigo Carmine (C.I. Natural Blue 2)

2025-06-18

Cristina M. Luque-Jacobo , Elizabeth Medrano de Jara , Jose Carrasco Bocangel +1 more | Fibers

As part of an implementation in the Peruvian textile industry, the use of different sources to obtain blue hues in alpaca fiber has taken on a prominent role. The present … As part of an implementation in the Peruvian textile industry, the use of different sources to obtain blue hues in alpaca fiber has taken on a prominent role. The present study investigated the optimization of the dyeing process of alpaca fibers using indigo carmine as dye. The methodology was based on a central composite design (CCD) and response surface methodology (RSM) with color strength (K/S) as response variable. The results demonstrate that the independent variables significantly affected the color strength (K/S). In this context, an increase in both mordant concentration (3.9887 g/L) and dyeing temperature (95 °C), coupled with lower exhaust time (30.0019 min), enhanced levels of superficial dye adsorption. Additionally, color fastness properties provided tolerable values according to the gray scale. In conclusion, the optimization of the dyeing process of alpaca fibers using indigo carmine enabled the achievement of a blue shade with satisfactory fastness properties in the fiber yarns.

Ultraviolet protection and antibacterial properties of textile fabric made of silver nanoparticles/alkaline lignin/regenerated cellulose fiber

2025-06-18

Yanyu Chen , Shoujuan Wang , Guichun Hu +2 more | Industrial Crops and Products

The plasticisation model of dye diffusion: Part 5

2025-06-18

S.M. Burkinshaw | Coloration Technology

Abstract The findings presented in the previous part of the paper (Part 4) of the re‐evaluation of previously published data reported for the temperature‐dependent diffusion of an organic acid within … Abstract The findings presented in the previous part of the paper (Part 4) of the re‐evaluation of previously published data reported for the temperature‐dependent diffusion of an organic acid within nylon 6 film, desorption of three acid dyes from dyed nylon 66 fabric, diffusion of an acid dye within nylon 6 monofilaments and adsorption of a sulphur dye onto nylon 66 fabric, were analysed. The differentiation of the temperature‐dependent dyeing/desorption behaviour of each of the six anionic compounds into two distinct, but interconnected, thermal regions, which corresponded to diffusion/desorption/adsorption undergoing a marked change at either 50, 60, or 70°C, was attributed to the broad, overlapping glass transition of the mobile amorphous and rigid amorphous phase components. As the experimentally observed diffusion/desorption/adsorption of each of the six types of anionic species adhered to a Williams–Landel–Ferry relationship, their thermally activated dyeing/desorption behaviour is governed by the thermally regulated relaxation times of the structural rearrangements occurring within the water‐plasticised polyamide material. The plasticisation model of dye diffusion seems to offer a reasonable explanation of the observed temperature dependency of the diffusivity of the organic acid, each of the four acid dyes and sulphur dye within the different types of aliphatic polyamide substrate.

Investigation of Surface Properties and Antibacterial Activity of 3D-Printed Polyamide 12-Based Samples Coated by a Plasma SiOxCyHz Amorphous Thin Film Approved for Food Contact

2025-06-17

M. Nicotra , Raphael Palucci Rosa , Valentina Trovato +7 more | Polymers

Microbial contamination and biofilm formation on food contact materials (FCMs) represent critical challenges within the food supply chain, compromising food safety and quality while increasing the risk of foodborne illnesses. … Microbial contamination and biofilm formation on food contact materials (FCMs) represent critical challenges within the food supply chain, compromising food safety and quality while increasing the risk of foodborne illnesses. Traditional materials often lack sufficient microbial resistance to contamination, creating a high demand for innovative antimicrobial surfaces. This study assessed the effectiveness of a nanosized deposited SiOxCyHz coating approved for food contact on 3D-printed polyamide 12 (PA12) disk substrates, aiming at providing antimicrobial and anti-biofilm functionality to mechanical components and packaging material in the food supply chain. The coating was applied using plasma-enhanced chemical vapor deposition (PECVD) and characterized through Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and contact angle measurements. Coated PA12 samples exhibited significantly enhanced hydrophobicity, with an average water contact angle of 112.9°, thus improving antibacterial performance by markedly reducing bacterial adhesion. Microbiological assays revealed a significant (p < 0.001) bactericidal activity (up to 4 logarithms after 4 h, ≥99.99%) against Gram-positive and Gram-negative bacteria, including notable foodborne pathogens such as L. monocytogenes, S. aureus, E. coli, and S. typhimurium. SiOxCyHz-coated PA12 surfaces exhibited strong antibacterial activity, representing a promising approach for coating additive-manufactured components and equipment for packaging production in the food and pharmaceutical supply chain able to enhance safety, extend product shelf life, and reduce reliance on chemical sanitizers.

Regeneration of CI Sulfur Black 1 dyed cellulose through the viscose process

2025-06-17

Sophia Mueller , Doris E. Braun , Thomas Bechtold +2 more | Textile Research Journal

The aim of investigations here was to examine whether cellulose fibers dyed with CI Sulfur Black 1 (SB1), either alone or in combination with indigo (CI Vat Blue 1), may … The aim of investigations here was to examine whether cellulose fibers dyed with CI Sulfur Black 1 (SB1), either alone or in combination with indigo (CI Vat Blue 1), may be dissolved and regenerated into fresh fibers with the viscose process. Hence, dyed cellulosic fibers dyed were subjected to the viscose process of spin dope preparation and regeneration to determine whether the dyestuff(s) survived in the cellulose or leached out into the process liquors. Multiple levels of the process parameters, as reported in literature, were examined. The results indicate that the SB1 dye, both alone and in combination with the indigo, survived in the cellulose and did not leach out. However, a change of color appearance was observed in the regenerates from fibers containing both SB1 and indigo, which is attributed to rearrangement in the distribution of dyestuff molecules. The research is part of a fiber-to-fiber recycling effort, where fiber polymers are to be extracted from used textiles and respun into fresh fibers for the production of new textiles. If the dyestuff could be retained in the polymer through dissolution/regeneration it would eliminate the need both for prior dyestuff removal and later redyeing of the regenerated fibers.

Use of Corn Oil as an Alternative Medium in Cotton Dyeing with Direct Dyes: Reducing Salt and Water Usage and Assessing Oil Reusability

2025-06-17

Ana Carolina Volkmann , Carlos Rafael Silva de Oliveira , André Luiz Marquardt +2 more | Fibers and Polymers

Keratin biomaterials for wound healing and tissue regeneration: A promising approach in biomedical applications

2025-06-17

Marek Konop | Advances in Clinical and Experimental Medicine

Keratin biomaterials, derived from natural sources, offer a promising, biocompatible solution for wound healing and tissue regeneration, though further clinical studies are needed to confirm their efficacy. Keratin biomaterials, derived from natural sources, offer a promising, biocompatible solution for wound healing and tissue regeneration, though further clinical studies are needed to confirm their efficacy.

One-Pot Preparation of a Novel Imidazole-Containing Water Polyurethane to Improve the Discoloration and Durability of Silver Ion Antimicrobial Finishes on Light-Colored Cotton Fabrics

2025-06-17

Linghui Kong , Almas Anwar , Jiahui Li +4 more | Fibers and Polymers

INFLUENCE OF THE CHARGED DOUBLE LAYER ON THE KINETICS OF ION ABSORPTION IN A BI-POROUS MEDIUM DURING FABRIC DYEING

2025-06-15

Iryna Furtat , Yurii Furtat | Наука і техніка сьогодні

Pengaruh Logam Al(III) dan Cu(II) sebagai Mordan Terhadap Ketahanan Luntur Zat Warna Indigo Carmine pada Kain Katun

2025-06-15

Jhosua Enrico H. Simanullang , Sriyanti Sriyanti , Suhartana Suhartana | Greensphere Journal of Environmental Chemistry

Perkembangan industri batik tekstil dalam memenuhi kebutuhan sandang, industri batik tidak lepas dari pewarnaan kain. Pewarna yang umum digunakan di industri tekstil adalah pewarna sintetik karena warna yang dihasilkan lebih … Perkembangan industri batik tekstil dalam memenuhi kebutuhan sandang, industri batik tidak lepas dari pewarnaan kain. Pewarna yang umum digunakan di industri tekstil adalah pewarna sintetik karena warna yang dihasilkan lebih menarik, pengerjaan pewarnaan cepat dan zat warna sintetis mudah diperoleh. Salah satu pewarna tekstil yaitu indigo carmine yang menghasilkan warna biru tua Pada proses pewarnaan kain, zat warna tidak memungkinkan untuk berinteraksi langsung karena mudah luntur. Maka dibutuhkan suatu zat yang dapat mengikat warna dengan kain agar warna yang dihasilkan lebih tahan luntur dan merata yaitu zat mordan. Tujuan dari penelitian ini adalah menentukan pengaruh logam Al(III) dan Cu(II) sebagai mordan pada pewarnaan kain, serta membandingkan kemampuan logam Al(III) dan Cu(II) sebagai mordan terhadap zat warna indigo carmine. Metode yang digunakan dalam penelitian ini adalah premordanting, yaitu kain lebih dahulu diberi mordan lalu dicelupkan pada zat warna. Hasil penelitian menunjukkan rasio mol terbaik berada pada 1:5. Kain katun yang tidak diberi perlakuan dengan logam mordan, diperoleh warna biru tua pada panjang gelombang maksimum 610 nm, dan dengan logam mordan Al2(SO4) diperoleh warna biru tua lebih pekat pada panjang gelombang maksimum 607 nm, dan dengan mordan CuSO4.5H2O diperoleh warna yang berbeda yaitu hijau kebiruan pada panjang gelombang maksimum 610 nm. Hasil analisis SEM-EDX mendeteksi unsur aluminium 0,40% dan unsur tembaga sebanyak 0,35%. Hasil aplikasi uji ketahanan luntur kain berdasarkan SNI, dibandingkan dengan kain yang tidak diberi perlakuan dengan logam mordan, menunjukkan bahwa dengan penggunaan logam mordan lebih baik dalam mempertahankan ikatan zat warna.

Development of Sustainable Polyethylene Formulations with Antioxidant Functionality Using Loquat Byproducts as Additives

2025-06-14

Juan Ivorra Martínez , Carlos Lazaro‐Hdez , Maria del Puig Vicente-Vinas +3 more | Journal of Polymers and the Environment

Green formulation of Vitamin K3 loaded chitosan nanoparticle as an eco-friendly and promising strategy for periorbital hyperpigmentation treatment: <i>In vitro</i> and <i>in vivo</i> assessment

2025-06-13

Seyyed Mohammad Hassan Hashemi , Vida Armat , Masoumeh Tavassoti Kheiri +1 more | Journal of Dispersion Science and Technology

Application of Bacterial Revertant Mutation Test in Hair Dye Research

2025-06-12

B. Li , Di Wang | Materials science forum

Hair dye is a cosmetic product that is used to change the color of hair for beauty purposes. In this paper, a certain brand of hair dye is used as … Hair dye is a cosmetic product that is used to change the color of hair for beauty purposes. In this paper, a certain brand of hair dye is used as an example, and the bacterial revert mutation experiment is used to verify whether the hair dye will produce bacterial mutations. After testing, the brand hair dye is mutagenic negative, that is, it is not harmful to the human body and meets the standards for market sales.

Microencapsulation of leuco dye based thermochromic system by complex coacervation method for thermochromic, thermoregulating and antibacterial composite cotton fabric

2025-06-12

M. Selda Tözüm , Sena Demirbağ Genç , Sennur Alay Aksoy | Journal of the Textile Institute

Solvent-Free Mechanochemical Synthesis of Tannic Acid–Citric Acid/Uniconazole Nanocapsules with Enhanced Intracellular Delivery for Nanopesticide Applications

2025-06-12

Bo Yan , Xinlin Li , Chao Huang +1 more | ACS Applied Nano Materials

Dyeing Research Committee

2025-06-10

Seiji Kaino | Sen i Gakkaishi