Preparation of amphiphilic acrylate copolymer containing active epoxy group and its fatliquoring : Effect on aldehyde-tanned leather / Huang Yingying in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 3 (05-06/2023)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 3 (05-06/2023) . - p. 93-97 Titre : Preparation of amphiphilic acrylate copolymer containing active epoxy group and its fatliquoring : Effect on aldehyde-tanned leather Type de document : texte imprimé Auteurs : Huang Yingying, Auteur ; Jinxia Du, Auteur ; Xu Zhang, Auteur ; Biyu Peng, Auteur ; Chunxiao Zhang, Auteur Année de publication : 2023 Article en page(s) : p. 93-97 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Copolymère ester acrylique Copolymères -- Synthèse Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Epoxydes Glutaraldéhyde Huiles et graisses Polymères amphiphiles Polymérisation en émulsion Produits de nourriture du cuir Résistance à la déchirure Tannage chrome free Tannage organique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Acrylic-acrylic long-chain ester amphiphilic copolymers are a class of leather retanning and fatliquoring materials with superior properties. However, these types of copolymers lack reactive groups and possess weak binding ability to organically-tanned leather. In this paper, a terpolymer Poly(AA-LA-GMA) containing reactive epoxy groups was prepared by emulsion copolymerisation of acrylic acid (AA), dodecyl acrylate (LA) and glycidyl methacrylate (GMA) monomers. The effect of the GMA content on its binding ability to leather fibres and its fatliquoring properties was investigated. The results showed that the introduction of the epoxy group can significantly improve the combination of copolymer with glutaraldehyde-tanned leather. When the content of GMA monomer reached 10% of the total monomer amount (mol), the dichloromethane extraction rate and fogging value of the fatliquored leather were reduced by about 34% and 53%, respectively. And the excellent binding ability improved the softness and tear strength of the fatliquored leather. Note de contenu : - INTRODUCTION : Materials - Synthesis of epoxy-modified amphiphilic copolymers - Determination of the content of the residual monomer - Fourier Transform Infrared spectroscopy (FTIR) - Application of Poly(AA-LA-GMA) in the fatliquoring process - Determination of the absorption rate of fatliquor - Determination of softness and tear strength of crust leather - Determination of dichloromethane extraction rate - Determination of fogging value - RESULTS AND DISCUSSION : Preparation and characterisation of Poly(AA-LAGMA) - Fatliquoring effects of Poly(AA-LA-GMA) on chrome-tanned leather - Fatliquoring effect of Poly(AA-LA-GMA) to glutaraldehyde-tanned leather - Action mechanism between epoxy-modified amphiphilic copolymer and leather - Table 1 : Fatliquoring effects of amphiphilic copolymers to chrome-tanned leather - Table 2 : Fatliquoring effects of amphiphilic copolymers to glutaraldehyde-tanned leather - Fig. 1 : Schematic of the copolymerisation reaction - Fig. 2 : Action mechanism between epoxy-modified amphiphilic copolymer and leather En ligne : https://drive.google.com/file/d/1KByCAQkl2D1o3TmoIgqbuA3ZMjFh8hZt/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39579 [article]

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