Investigations on the general properties of biomass-based aldehyde tanned sheep fur for its selective post-tanning processing / Wei Ding in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 13 p. Titre : Investigations on the general properties of biomass-based aldehyde tanned sheep fur for its selective post-tanning processing Type de document : texte imprimé Auteurs : Wei Ding, Auteur ; Ya-Nan Wang, Auteur ; Jianfei Zhou, Auteur ; Haiteng Liu, Auteur ; Xiaoyan Pang, Auteur ; Bi Shi, Auteur Année de publication : 2021 Article en page(s) : 13 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alginate de sodium dialdéhyde Biomasse Chimie analytique Fourrures Fourrures -- Propriétés physiques Fourrures -- Teinture Laine de mouton Post-tannage Rayonnement ultraviolet Tannage combiné Le tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en Å“uvre par exemple Chrome-Végétal ou Chrome-Synthétique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Dialdehyde sodium alginate (DSA) is an alternative chrome-free tanning material for fur production. To obtain satisfactory resultant fur and provide suggestions for the usage of DSA in fur making, the general properties of DSA tanned sheep fur were systematically investigated. The tanning mechanism of DSA was analyzed and it was verified that DSA was mainly combined with collagen fiber by forming Schiff base covalent bonds while supplemented by a small number of hydrogen bonds and ionic bonds. Due to the acid sensitivity of Schiff base structure, DSA tanned fur had poor resistance to acid rinsing but had excellent resistance to washing and good fatliquoring performance. Also, it had good resistances to yellowing and reductant. After being retanned by chrome tanning agent, the fur was capable of enduring a high-temperature dyeing process (68 °C for 8 h). Overall, DSA tanned sheep fur had favorable properties under appropriate post-tanning processing conditions to manufacture light-colored or dark-colored fur products with desirable physical properties. Note de contenu : - EXPERIMENTAL : Materials - Tanning mechanism analysis of DSA - Fatliquoring of DSA tanned fur - Interactions between Cr (III) and DSA - Chrome-reduced combination tanning trials - Analytical methods - RESULTS AND DISCUSSION : Tanning mechanism of DSA - Stability of DSA tanned sheep fur - Fatliquoring performance - Chrome-reduced combination tanning performance based on DSA - combination tanned sheep fur - Table 1 : Effect of UV-irradiation on the chrominance of tanned sheep fur - Table 2 Physical properties of fatliquored DSA tanned sheep fur - Table 3 High-temperature dyeing performance of chrome-reduced - Table 4 : Physical properties of fatliquored sheep fur made from chrome-reduced combination tanning based on DSA DOI : https://doi.org/10.1186/s42825-020-00047-8 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00047-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37466 [article]

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