A single-step pad-steam cationisation and dyeing process for improving dyeing properties of cotton fabrics / Lei Wang in COLORATION TECHNOLOGY, Vol. 138, N° 5 (10/2022)  

[article]  inCOLORATION TECHNOLOGY > Vol. 138, N° 5 (10/2022) . - p. 509-521 Titre : A single-step pad-steam cationisation and dyeing process for improving dyeing properties of cotton fabrics Type de document : texte imprimé Auteurs : Lei Wang, Auteur ; Guangyuan Xie, Auteur ; Xiang Mi, Auteur ; Xiaohu Kang, Auteur ; Qiuyu Zhu, Auteur ; Zhicheng Yu, Auteur Année de publication : 2022 Article en page(s) : p. 509-521 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cationisation Colorants réactifs 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). Teinture -- Fibres textiles Teinture au tampon Index. décimale : 667.3 Teinture et impression des tissus Résumé : The cationic modification technology for cotton could greatly enhance colour strength and fixation of reactive dyes. However, it is a two-step method when cationic modification is applied to salt-free dyeing. Cotton fabric is initially treated with a cationic compound through exhaust or pad-cure, acid washing and drying process, then the cationic modified cotton is dyed with reactive dye. In this study, a single-step pad-steam cationisation and dyeing process was proposed to shorten the process and improve dye fixation. The fixation reaction between reactive dye and cotton fabrics was conducted at the temperature range 100–140°C and relative humidity range 40–90%. The effects of quaternary ammonium salt and inorganic salt as well as alkaline agent on K/S value and dye fixation were also studied. Furthermore, the drying kinetic of the wet cotton fabric was studied in this article. The result showed that the drying process fitted well to the Page model. The effective moisture diffusivity of wet cotton under different steaming conditions were calculated. An activation energy value of 32.25 kJ/mol was determined. Compared with the conventional process, a single-step pad-steam cationisation and dyeing process not only shortened the process but also increased K/S value and dye fixation. Note de contenu : - MATERIALS AND METHODS : Materials - Pad-dyeing process - Fabric testing - RESULTS AND DISCUSSION : Effect of steaming temperature and time on the single-step pad-steam cationisation and dyeing process - Effect of relative humidity on the single-step pad-steam cationisation and dyeing process - Effect of quaternary ammonium salt and inorganic salt on the single-step pad-steam cationisation and dyeing process - Effect of NaHCO3 concentration on the single-step pad-steam cationisation and dyeing process - Analysis of drying characteristics and effect of the water on the single-step pad-steam cationisation and dyeing process - Comparison of different pad-dyeing processes - Table 1 : Five thin layer drying models used for experimental data - Table 2 : Dry model fitting results - Table 3 : Calculation of effective moisture diffusion coefficient - Table 4 : The K/S value, dye fixation and colourfastness of cotton fabric with different pad-dyeing processes DOI : https://doi.org/10.1111/cote.12608 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12608 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38125 [article]

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