An introduction to textile coloration / Roger H. Wardman / Hoboken [USA] : John Wiley & Sons (2018)

Titre : An introduction to textile coloration Titre original : Principles and practice Type de document : texte imprimé Auteurs : Roger H. Wardman, Auteur Editeur : Hoboken [USA] : John Wiley & Sons Année de publication : 2018 Importance : XVI-358 p. Présentation : ill. Format : 25 cm ISBN/ISSN/EAN : 978-1-119-12156-5 Prix : 76,30 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie textile Colorants Colorimétrie Essais (technologie) Impression sur étoffes Pigments Solidité de la couleur Solidité de la teinture Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : For some time there has been the need for an introductory level book which presents the basic science underlying dyeing and printing processes, aimed at personnel working in textile dyeing or printing companies as well as those interested in entering into the field. Starting with the basic science this detailed text explains the fundamentals of dye and pigment chemistry and the various application techniques and processes. It offers chapter coverage of the general chemistry related to textiles, textile fibres, chemistry of dyes and pigments, industrial coloration methods, textile printing, theoretical aspects of dyeing, the measurement of colour and fastness testing. Reference is made to developments that have taken place in the coloration industry in recent years, not least of which have been the challenges imposed by the drive towards environmentally-friendly processes and restrictions on the use of certain chemicals. An Introduction to Textile Coloration: Principles and Practice : - Covers atomic structure, chemical reactions, and acids, bases, and salts - Explains the nature of fibre-forming polymers and the conversion of synthetic polymers into fibre filaments - Educates on the classification of colorants and the commercial naming of dyes and pigments - Introduces readers to the dye application processes and dyeing machinery - Instructs on dye aggregation, factors affecting colour appearance, the principles of colour fastness testing, and more This book will be helpful for professionals in textile companies who do not have a strong scientific background, so that they may attain a better understanding of the chemical principles of colour application. In addition, the SDC runs a course for dyehouse technicians leading to the award of its Textile Coloration Certificate and this book is intended to be helpful for candidates following the course. Note de contenu : - 1. GENERAL CHEMISTRY RELATED TO TEXTILES : Introduction - Atomic structure - Periodic table of the elements - 1. Valency and bonding - Chemical reactions - Acids, bases and salts - Redox reactions - Organic chemistry - The use of chemicals by industry - 2. TEXTILE FIBRES : Introduction - Nature of fibre-forming polymers - Properties of textile fibres - Mechanical properties of textile fibres - Chmistry of the main fibre types - Protein fibres - Regenerated fibres - Synthetic fibres - Conversion of synthetic polymers into fibre filaments - Fibre cross-sectional shapes - Microfibres - Absorbent fibres - Drawing of synthetic fibre filaments - Conversion of man-made fibre filaments to staple - Imparting texture to synthetic fibres - Fibre blends - Textile manufacturing - 3. CHEMISTRY OF DYES AND PIGMENTS : Introduction - Classification of colorants - Colour in organic molecules - Classification of dyes according to chemical structure - Classification of dyes according to application class - Commercial naming of dyes and pigments - Strength and physical form of colorants - 4. INDUSTRIAL COLORATION METHODS : Introduction - Dye application processes - Dyeing machinery - Supercritical fluid dyeing - 5. TEXTILE PRINTING : Introduction - Print paste formulation - Thickeners - Binders - Pigments and dyes - Printing screens - Stages of printing - Printing styles - Printing methods - 6. THEORETICAL ASPECTS OF DYEING : Introduction - Kinetic aspects of dyeing - Dye aggregation - Diffusion - Rate of dyeing - Adsorption - Thermodynamic information derived from equilibrium studies of dyeing systems - 7. THE MEASUREMENT OF COLOUR : Introduction - Describing colour - Additive and subtractive colour mixing - The colour solid - Factors affecting colour appearance - The CIE system of colour specification - Applications of the CIE system - Solution colour measurement - 8. FASTNESS TESTING : Introduction - Standards related to coloration - Resistance of coloured fabric to harmful agencies - Principles of colour fastness testing - Fastness tests - Test organisations for sustainable textile manufacture - Appendix : Some textile terms and definitions Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33549

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Assessment of uniformity of fibre coloration in Tencel woven fabrics dyed using reactive dyes / Uzma Syed in COLORATION TECHNOLOGY, Vol. 127, N° 6 (2011)

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 6 (2011) . - p. 418-425 Titre : Assessment of uniformity of fibre coloration in Tencel woven fabrics dyed using reactive dyes Type de document : texte imprimé Auteurs : Uzma Syed, Auteur ; Roger H. Wardman, Auteur Année de publication : 2011 Article en page(s) : p. 418-425 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs Fibres cellulosiques Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Weave structure and fabric density has an influence on dye penetration. The uniformity of dyeing, expressed as the uniformity of fibre coloration, of Tencel woven fabrics comprised of different weave structures, was assessed. The fabrics were dyed by exhaust and continuous dyeing methods using selected reactive dyes. Cross-sectional images were captured and then given a rating 1–5 with respect to the depth of the fibre filaments of the yarn of the woven fabric. The images were assessed both subjectively and objectively. The uniformity of fibre coloration was expressed in terms of the standard deviation, mean value and histogram analysis such as dispersion and bandwidth. Objective assessment of uniformity of fibre coloration is a more accurate and quicker method than visual assessment and can be used to assess the uniformity of fibre coloration of woven and knitted fabrics dyed by any class of dyes. Improvement of the uniformity of fibre coloration of Tencel fabrics of various weave structures by causticisation of the fabrics and by modification to the padding process was investigated. Note de contenu : - EXPERIMENTAL : Materials - Method - Subjective assessment - Objective assessment - RESULTS AND DISCUSSION : Agreement between subjective and objective evaluation of UFC - Influence of type of weave structure on UFC - Influence of fabric density (plain woven fabrics) on UFC - Improvement of UFC DOI : 10.1111/j.1478-4408.2011.00339.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12663 [article]

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Determination of dyers' perceived components of colour difference (depth, brightness and hue) between two similar colours from their spectral reflectance values / Roger H. Wardman in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 161-168 Titre : Determination of dyers' perceived components of colour difference (depth, brightness and hue) between two similar colours from their spectral reflectance values Type de document : texte imprimé Auteurs : Roger H. Wardman, Auteur ; Salma Farooq, Auteur ; Ken J. Smith, Auteur Année de publication : 2012 Article en page(s) : p. 161-168 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algorithmes Colorimétrie Spectroscopie de réflectance Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The partitioning of colour differences into ΔL*, ΔC* and ΔH* is not directly equivalent to the dyer’s method of partitioning. The dyer’s method involves separation into the components of depth (ΔD), brightness (ΔB) and hue (ΔH), of which only hue difference has a qualitative (and quantitative) equivalent in the CIELAB system. Depth and brightness are important terms to dyers. Depth is related to the amount of dye taken up by a textile material and brightness to that component of colour difference that is neither depth nor hue. Brightness is best defined as the opposite of dullness, dullness being related to the amount of neutral grey present in the colour. An algorithm, called the Wardman–Smith–Farooq algorithm, has been developed to compute the dyers’ variables of ΔD,ΔB and ΔH from spectral reflectance values, enabling dyers to take full advantage of colorimetry. The algorithm is based on extensive experimental work to map surfaces of constant visual depth through the colour space and this paper describes the methodology of the calculation. The correlations of the values of ΔD,ΔB and ΔH, determined using the Wardman–Smith–Farooq algorithm with other empirical models for 117 sample pairs, are given. Note de contenu : - EXPERIMENTAL : Development of the WSF algorithm - Stages of the algorithm - RESULTS AND DISCUSSION : Comparison with the DBH and sato models - Performance of the WSF algorithm with visual assessments DOI : 10.1111/j.1478-4408.2012.00372.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15114 [article]

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Ink-jet printing process for lyocell and cotton fibres. Part 2 : The relationship of colour strength and dye fixation to ink penetration / Robert M. Christie in COLORATION TECHNOLOGY, Vol. 126, N° 6 (2010)  

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 6 (2010) . - p. 342-347 Titre : Ink-jet printing process for lyocell and cotton fibres. Part 2 : The relationship of colour strength and dye fixation to ink penetration Type de document : texte imprimé Auteurs : Robert M. Christie, Auteur ; Roger H. Wardman, Auteur ; A. W. Kaimouz, Auteur Année de publication : 2010 Article en page(s) : p. 342-347 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Fibres cellulosiques Fibres végétales Fixation (chimie) Impression jet d'encre Impression sur étoffes Textiles et tissus imprimés Index. décimale : 667.3 Teinture et impression des tissus Résumé : The colour appearance on ink-jet printed textiles is influenced by a range of factors, including the chemical and physical nature of the fibre, dye–fibre affinity, pretreatment and fabric structure. Regression analyses were conducted to study the correlation between colour strength, fixation and ink penetration obtained by ink-jet printing lyocell fibres (standard Tencel and Tencel A100) and cotton with an ink based on a monofunctional reactive red dye. The fixation was highest on Tencel A100, followed by standard Tencel and then cotton, while colour strength was highest on standard Tencel followed by cotton and Tencel A100. A linear relationship between colour strength and ink penetration was found with cotton, indicating greater dependence of depth of shade on ink penetration than on standard Tencel and Tencel A100 fabrics, where the interrelationships were more complex, but of low statistical significance. A schematic representation is proposed illustrating the mechanism of ink penetration into pretreated fibres, which provides a reasonable interpretation of the events occurring as dye penetrates into and fixes onto the fibres. DOI : 10.1111/j.1478-4408.2010.00267.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00267.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10245 [article]

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