Low-temperature wet-cross-linking of silk with citric acid / Narendra Reddy in Industrial & engineering chemistry research, Vol. 50 N° 8 (Avril 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4458–4463 Titre : Low-temperature wet-cross-linking of silk with citric acid Type de document : texte imprimé Auteurs : Narendra Reddy, Auteur ; Karlin Warner, Auteur ; Yiqi Yang, Auteur Année de publication : 2011 Article en page(s) : pp. 4458–4463 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Silk Citric acid Résumé : We report the development of a novel method of improving the wet wrinkle recovery of silk fabrics without affecting the whiteness or the tensile properties of the cross-linked fabrics. Previous attempts on cross-linking silk with poly(carboxylic acids) have been done in the dry state at high temperatures (150−175 °C) in the presence of the toxic catalyst, sodium hypophosphite, with decrease in the whiteness and tensile properties of the cross-linked fabrics. In this research, citric acid (CA) was used to cross-link silk in the wet state at low temperatures using weak acidic to neutral pH as catalyst. The effect of cross-linking conditions on the wrinkle recovery, whiteness index and yarn tensile and fabric tear strength were studied. The durability of the cross-linking to laundering was also examined. The new method of cross-linking improves the wet wrinkle recovery of the silk fabrics by about 32% compared to the noncross-linked fabric without affecting the whiteness or the tensile properties of the fabrics. The improvement in the functional properties of silk was stable to multiple launderings. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102226f [article] Low-temperature wet-cross-linking of silk with citric acid [texte imprimé] / Narendra Reddy, Auteur ; Karlin Warner, Auteur ; Yiqi Yang, Auteur . - 2011 . - pp. 4458–4463. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4458–4463 Mots-clés : Silk Citric acid Résumé : We report the development of a novel method of improving the wet wrinkle recovery of silk fabrics without affecting the whiteness or the tensile properties of the cross-linked fabrics. Previous attempts on cross-linking silk with poly(carboxylic acids) have been done in the dry state at high temperatures (150−175 °C) in the presence of the toxic catalyst, sodium hypophosphite, with decrease in the whiteness and tensile properties of the cross-linked fabrics. In this research, citric acid (CA) was used to cross-link silk in the wet state at low temperatures using weak acidic to neutral pH as catalyst. The effect of cross-linking conditions on the wrinkle recovery, whiteness index and yarn tensile and fabric tear strength were studied. The durability of the cross-linking to laundering was also examined. The new method of cross-linking improves the wet wrinkle recovery of the silk fabrics by about 32% compared to the noncross-linked fabric without affecting the whiteness or the tensile properties of the fabrics. The improvement in the functional properties of silk was stable to multiple launderings. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102226f

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