Dyeing of polyamide fabrics with a reverse micellar system using soybean oil as a solvent / Leticia Fantinati Guimaraes in COLORATION TECHNOLOGY, Vol. 140, N° 1 (02/2024)  

[article]  inCOLORATION TECHNOLOGY > Vol. 140, N° 1 (02/2024) . - p. 103-113 Titre : Dyeing of polyamide fabrics with a reverse micellar system using soybean oil as a solvent Type de document : texte imprimé Auteurs : Leticia Fantinati Guimaraes, Auteur ; Angelo Granato Granato, Auteur Année de publication : 2024 Article en page(s) : p. 103-113 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorants acides Colorimétrie Emulsions Micelles Polyamides Un 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. Surfactants Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The current study reports the results of non-aqueous dyeing on polyamide fabrics based on a reverse micellar system composed of a stable emulsion of soybean oil, a co-surfactant, a nonionic surfactant and acid dyes. The system does not make use of water or electrolytes and significantly reduces the dyebath volume. The influence of the hydrophilic lipophilic balance of the surfactants was evaluated, and it was found that the more hydrophilic the surfactant, the better the interaction of the reverse micellar emulsion with the substrate and, consequently, the greater the resulting colour strength. The co-surfactant plays an important role in the system, as its proportion to the surfactant/oil mixture is directly related to better exhaustion of the dyebath. The results were compared with those from a conventional water-based dyeing system. Colour matching was performed using the CIELab colour difference formula (ΔE) measured by a reflectance spectrophotometer. Note de contenu : - EXPERIMENTAL : Materials - Micellar emulsion preparation - Characterisation of reverse micelles - Scanning electron microscopy - Reverse micellar dyeing - Conventional aqueous dyeing - Colour measurements - RESULTS AND DISCUSSION : TEM - Influence of the bath ratio - Influence of the surfactant to co-surfactant ratio - Influence of the HLB of the surfactant - Scanning electron microscopy - Colour fastness to rubbing/crocking and to washing - Table 1 : Hydrophilic–lipophilic balance (HLB) values of the surfactants - Table 2 : Colour difference (ΔE) values for micellar dyeing with different surfactants - Table 3 : Tinctorial power related to conventional aqueous dyeing with C.I. Acid Blue 260 - Table 4 : Tinctorial power related to conventional aqueous dyeing with C.I. Acid Yellow 127 - Table 5 : Tinctorial power related to conventional aqueous dyeing with Acid Red G - Table 6 : Colour fastness to rubbing/crocking - Table 7 : Colour fastness to rubbing/crocking - Table 8 : Colour fastness to rubbing/crocking - Table 9 : Colour fastness to washing - Table 10 : Colour fastness to washing - Table 11 : Colour fastness to washing DOI : https://doi.org/10.1111/cote.12702 En ligne : https://drive.google.com/file/d/1SLuyk78tIi5eJ-bea0iCsHCvJ2agTdXA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40394 [article]

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