Superhydrophobic modification of collagen fiber : A potential substitute for tanning / Shuangfeng Xu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 10 (10/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 10 (10/2022) . - p. 422-431 Titre : Superhydrophobic modification of collagen fiber : A potential substitute for tanning Type de document : texte imprimé Auteurs : Shuangfeng Xu, Auteur ; Ya-Nan Wang, Auteur ; Bi Shi, Auteur Année de publication : 2022 Article en page(s) : p. 422-431 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Collagène Cuir Déshydratation Hydrophobie Innovations Procédé de fabrication sans tannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Tanning is considered to be the crosslinking reaction between collagen fibers and tanning agents, and a majority of tanning reactions result in suppressed water absorption and enhanced hydrophobicity of leather. However, extensive use of tanning agents may bring a burden to the environment. Herein, to facilitate a sustainable leather manufacturing industry, we propose a revolutionary strategy of “tanning” without tanning agents. Based on this strategy, superhydrophobic collagen fibers (FAS-CFs) were fabricated through dehydration, followed by superhydrophobic modification. Dehydration aimed to eliminate the “sticky” effect of water on collagen fiber to obtain a dispersed hierarchical structure. Superhydrophobic modification not only dispersed and stabilized the fiber structures, but also protected the fiber dispersity from water immersion. Compared with chrome-tanned collagen fibers (Cr-CFs) and glutaraldehyde-tanned collagen fibers (G-CFs), FAS-CFs showed higher hydrophobicity, lower water absorption, and superior mechanical properties. Meanwhile, FAS-CFs exhibited a high thermal denaturation temperature of 92.5°C and retained their original shape after being heated to 100°C. Therefore, our proposed strategy is expected to be a potential substitute for conventional tanning and might contribute to cleaner and sustainable leather manufacturing. Note de contenu : - EXPERIMENTAL : Materials - Fabrication of collagen fibers (CFs) - Fabrication of superhydrophic collagen fibers (FAS-CFs) - Fabrication of Cr (III) cross-linked collagen fibers (Cr-CFs) - Fabrication of glutaraldehyde cross-linked collagen fibers (G-CFs) - Characterization of CFs and FAS-CFs - Measurements of surface wettability of CFs, G-CFs, Cr-CFs, and FAS-CFs - Measurements of hydrophobic durability of FAS-CFs - Measurements of water absorption of CFs, G-CFs, Cr-CFs, and FAS-CFs - Measurements of the thermal stability - Measurements of the mechanical properties - RESULTS AND DISCUSSION : "Tanning agent-free strategy" for leather manufacturing - Characterization of CFs and FAS-CFs - Effect of fluorine content on hydrophobicity of FAS-CFs - Hydrophobic durability of FAS-CFs - Hydrophobicity of CFs, G-CFs - Cr-CFs, and FAS-CFs - Thermal stability and mechanical properties of CFs, G-CFs, Cf-CFs, and FAS-CFs DOI : https://doi.org/10.34314/jalca.v117i10.6182 En ligne : https://drive.google.com/file/d/1QXwPlu1ybF1PRLjOgUWAIcENm-vwpRQ-/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38228 [article]

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