Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite / Zhe Jiang in COLORATION TECHNOLOGY, Vol. 138, N° 1 (02/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 1 (02/2022) . - p. 82-89 Titre : Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite Type de document : texte imprimé Auteurs : Zhe Jiang, Auteur ; Yiyi Zhang, Auteur ; Nan Zhang, Auteur ; Qiang Wang, Auteur ; Ping Wang, Auteur ; Yuanyuan Yu, Auteur ; Man Zhou, Auteur Année de publication : 2022 Article en page(s) : p. 82-89 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bisulfite de sodium Colorants -- Adsorption Colorants acides Laine Teinture -- Fibres textiles Traîtements de surface Index. décimale : 667.3 Teinture et impression des tissus Résumé : Wool is a natural biopolymer with special properties, including warmth retention and skin-friendliness. However, its application in the textile industry is limited by the scale layer that covers its surface, which prevents the efficient diffusion of dye into the interior of its fibres, and increases wool's susceptibility to shrinkage during washing. Here, dissolution with sodium bisulphite is used for wool surface modification. The properties of surface dissolved wool are comprehensively characterised, including strength loss, shrinkage rate and dyeability. The three-dimensional images indicated that scale layer was etched. Coupled with Fourier-transform infrared (FTIR) spectra, the test results of strength loss and shrinkage rate indicated that surface dissolution degree can be controlled by time and temperature, and that the process does not break the fibre's main body structure. Dyeability properties, including dye absorption rate, deepness and uniformity at a lower temperature were enhanced, indicating amenability to industrial production. Our findings highlight a novel, efficient method of modifying protein fibre surface for enhancing properties with potential for large-scale application. Note de contenu : - MATERIALS AND METHODS : Materials - Methods - - RESULTS AND DISCUSSION : Three-dimensional surface morphology - Fourier-transform infrared analysis - Disulphide bond analysis - Impact of surface dissolution on loss of wool strength - Impact of surface dissolution on wool shrinkage rate - Dye diffusion in natural versus modified wool dyed with acid milling dye and acid supermilling dye - Performance of raw and surface-modified wool under low temperature dyeing - Dye absorption curve of surface-dissolved wool during low temperature dyeing - Diffusion coefficient analysis - Table 1 : Comparison of performance between raw and surface-modified wool under various concentrations of sodium bisulphite during low temperature dyeing - Table 2 : The diffusion coefficient of raw and surface modified wool using acid milling dye DOI : https://doi.org/10.1111/cote.12573 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12573 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37501 [article]

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