Effect of N,N-diethyl-m-toluamide on the structure and dyeing properties of meta-aramid and para-aramid fibre / Le-Yan Lei in COLORATION TECHNOLOGY, Vol. 130, N° 5 (10/2014)  

[article]  inCOLORATION TECHNOLOGY > Vol. 130, N° 5 (10/2014) . - p. 349-356 Titre : Effect of N,N-diethyl-m-toluamide on the structure and dyeing properties of meta-aramid and para-aramid fibre Type de document : texte imprimé Auteurs : Le-Yan Lei, Auteur ; Ya-Hong Mao, Auteur ; Xiao-Feng Xu, Auteur ; Jin-Qu Zheng, Auteur ; Qing-Kang Zheng, Auteur ; Yu Guan, Auteur ; Xiao-Min Fan, Auteur Année de publication : 2014 Article en page(s) : p. 349-356 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Solubilité Colorants dispersés Catégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester. Fibre aramide Teinture -- Fibres textiles synthétiques Transition vitreuse Index. décimale : 667.3 Teinture et impression des tissus Résumé : N,N-Diethyl-m-toluamide has been widely used in the mosquito-repellent finishing of textiles over the past few decades, but the use of N,N-diethyl-m-toluamide as a dye carrier for aramid dyeing with disperse dye has been seldom reported. Meanwhile, the application of aramid fibre in clothing is limited because it is difficult to dye. In this work, the effect of N,N-diethyl-m-toluamide on the dyeing properties of aramid fibre was examined by measuring the percentage disperse dye exhaustion under different conditions. In order to understand the mechanism by which N,N-diethyl-m-toluamide promotes the exhaustion of disperse dye on aramid fibre, the ultraviolet-visible spectrum of the dye and N,N-diethyl-m-toluamide solution, the glass transition temperature, the crystalline structure, and the degree of orientation of aramid fibre treated with N,N-diethyl-m-toluamide were measured by ultraviolet-visible spectrophotometry, differential scanning calorimetry, X-ray diffraction analysis, and velocity-oriented tests respectively. The results indicated that N,N-diethyl-m-toluamide not only could reduce the glass transition temperature and degree of orientation of aramid fibre but could also improve the solubility of disperse dye in aqueous solution, and therefore could enhance the percentage disperse dye uptake on aramid fibre, whereas treatment with N,N-diethyl-m-toluamide showed little effect on the crystalline structure of aramid fibre. The results implied that N,N-diethyl-m-toluamide was beneficial to the diffusion of disperse dye molecules into the amorphous region of aramid fibre under the dyeing conditions, but seldom affected the mechanical properties of aramid fibre. Note de contenu : - EXPERIMENTAL : 1. Materials - 2. Pretreatment - 3. Fibre dyeing - 4. Measurement of dye exhaustion and solubility - 5. Measurement of dye solubility - 6. Differential scanning calorimetry - 7. X-ray diffraction analysis - 8. Measurement of degree of orientation - 9. Measurement of tensile strength - RESULTS AND DISCUSSION : 1. Effect of dyeing temperature on percentage dye exhaustion - 2. Effect of N,N-diethyl-m-toluamide concentration on percentage dye exhaustion - 3. Effect of dyeing time on percentage dye exhaustion - 4. Effect of disperse dye concentration on percentage dye exhaustion - 5. Effect of N,N-diethyl-m-toluamide on the solubility of the disperse dye - 6. Effect of N,N-diethyl-m-toluamide on the glass transition temperature of aramid fibre - 7. Effect of N,N-diethyl-m-toluamide on the crystalline structure of aramid fibre - 8. Effect of N,N-diethyl-m-toluamide on the orientation of poly(p-phenylene terephtalamide) fibre - 9. Effect of N,N-diethyl-m-toluamide on the mechanical properties of aramid fibre DOI : 10.1111/cote.12106 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12106 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22073 [article]

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