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Metal mordanting in dyeing with natural colourants / Avinash P. Manian in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Metal mordanting in dyeing with natural colourants Type de document : texte imprimé Auteurs : Avinash P. Manian, Auteur ; Paul Roshan, Auteur ; Thomas Bechtold, Auteur Année de publication : 2016 Article en page(s) : p. 107-113 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants végétaux
Mordançage (teinture)
Photostabilité
Sels métalliques
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Metal mordanting, or the application of metal salts, is a common method of improving the light fastness in dyeing with natural colourants. This review presents the results from a survey of the literature on metal mordanting to assess what levels of correlation exist between mordant-induced effects (changes in colour and colour depth) and the changes in light fastness, what is known about the mechanisms of mordant-induced improvements of light fastness, and how the salt levels used in coloration processes compare with the limits on metal levels in wastewater and on the dyed substrates. No strong interrelationships are found between the mordant-induced effects and light fastness improvements. Knowledge about mechanisms of mordant effect on light fastness appears, in large part, to be derived from empirical correlations. However, as light fastness is affected by a multitude of factors, the correlations do not always hold true. It is found that residual metal contents in spent dye/mordanting liquors are generally not reported. However, with rough calculations, it is estimated that, with even the lowest reported salt concentrations, the metal contents in spent liquors exceed environmental release limits. The metal contents on dyed substrates are also not generally reported, but similar estimations show that the contents of heavy metal on dyed substrates (when copper and chromium salts are used as mordants) also exceed limits. On the basis of these observations, the authors make suggestions for elements to be included in investigations on furthering the use of natural colourants in textile dyeing. Note de contenu : - Colour depth changes and light fastness improvements
- Colour changes and light fastness improvements
- Photochemical quenching mechanisms
- Mordant levels used in dyeingDOI : 10.1111/cote.12199 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12199 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25853
in COLORATION TECHNOLOGY > Vol. 132, N° 2 (04/2016) . - p. 107-113[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Polyamide dissolution and recovery from fiber blends for recycling / Avinash P. Manian in MAN-MADE FIBERS INTERNATIONAL, Vol. 73, N° 1 (2023)
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Titre : Polyamide dissolution and recovery from fiber blends for recycling Type de document : texte imprimé Auteurs : Avinash P. Manian, Auteur ; Thomas Bechtold, Auteur ; Tung Pham, Auteur Année de publication : 2023 Article en page(s) : p. 48-49 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Dissolution (chimie)
Elasthanne
Mélanges de fibres
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Polymères -- Recyclage
Textiles et tissus -- RecyclageIndex. décimale : 677.4 Textiles artificiels Résumé : Over the past 2 decades, the production of new clothing has risen substantially whereas their rate of use, i.e. how long items are put to use before being discarded, has reduced. The result is a dramatic increase in the generation of textile waste, which is illustrated by the estimate that a truckload of disposed clothing is unloaded each second at a landfill or incineration site somewhere in the world. This situation has brought into sharp focus the need to use clothes for longer, and when finally disposed, to maximize the recovery of useful components from them for reuse in the manufacture of new clothing. Note de contenu : - Fig. 1 : Examples of PA containing clothing articles. PA-elastane blend for work gloves (top) and blend of PA, cellulose and elastane in sportswear
- Fig. 2 : PA-elastane blend before (top) and alter (bottom) treatment with the solvent composed of calcium chloride, ethanol and waterEn ligne : https://drive.google.com/file/d/1djVXlaRWgtAA38dgtjlQQ4dhgGhYS9Hx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39137
in MAN-MADE FIBERS INTERNATIONAL > Vol. 73, N° 1 (2023) . - p. 48-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23942 - Périodique Bibliothèque principale Documentaires Disponible Polyamide dissolution and recovery from fiber blends for recycling / Avinash P. Manian in MAN-MADE FIBERS INTERNATIONAL, Vol. 73 - Year Book 2023 (2023)
[article]
Titre : Polyamide dissolution and recovery from fiber blends for recycling Type de document : texte imprimé Auteurs : Avinash P. Manian, Auteur ; Thomas Bechtold, Auteur ; Tung Pham, Auteur Année de publication : 2023 Article en page(s) : p. 61-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dissolution (chimie)
Elasthanne
Fibres cellulosiques
Mélanges de fibres
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Textiles et tissus -- Recyclage
Textiles et tissus à usages techniques
VêtementsIndex. décimale : 677.47 Non cellulosiques : Nylon, acryliques, polyesters, vinyles Résumé : Over the past 2 decades, the production of new clothing has risen substantially whereas their rate of use, i.e. how long items are put to use before being discarded, has reduced. The result is a dramatic increase in the generation of textile waste, which is illustrated by the estimate that a truckload of disposed clothing is unloaded each second at a landfill or incineration site somewhere in the world. This situation has brought into sharp focus the need to use clothes for longer, and when finally disposed, to maximize the recovery of useful components from them for reuse in the manufacture of new clothing. Note de contenu : - Research focus
- Fig. 1 : Examples of PA containing clothing articles. PA-elastane blend for work gloves (top) and blend of PA, cellulose and elastane in sportswear
- Fig. 2 : PA-elastane blend before (top) and after (bottom) treatment with the solvent composed of calcium chloride, ethanol and waterEn ligne : https://drive.google.com/file/d/12ImMsnez7JL4BuBmxDavC6n8pskRbB2l/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40013
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Code-barres Cote Support Localisation Section Disponibilité 24252 - Périodique Bibliothèque principale Documentaires Disponible