Improvement in leather surface hydrophobicity through low-pressure cold plasma polymerization / Ya-E Feng in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 3 (03/2014)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 3 (03/2014) . - p. 89-95 Titre : Improvement in leather surface hydrophobicity through low-pressure cold plasma polymerization Type de document : texte imprimé Auteurs : Ya-E Feng, Auteur ; Xuepin Liao, Auteur ; Ya-Nan Wang, Auteur ; Bi Shi, Auteur Année de publication : 2014 Article en page(s) : p. 89-95 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuir Hydrophobie Polymérisation sous plasma Traîtements de surface Vinyltriéthoxysilane Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Vinyltriethoxysilane (VTES) was polymerized and deposited on the surface of upholstery crust leather by using low-pressure cold plasma technology. After plasma treatment (50 W, 300 s), the initial water contact angle of the leather surface increased from 120° to 140°, showing a significantly improved hydrophobicity of leather surface. The increased hydrophobicity of leather surface could remained even the leathers were stored for 240 d. The surface morphologies of leather were characterized by Scanning Probe Microscope (SPM) and Scanning Electron Microscope (SEM). Unlike the fiber-like texture of untreated leather, a coating of VTES polymer on the plasma treated leather surface was observed by SPM. SEM and SPM images indicated that this coating film was on the surface of collagen fibers rather than the whole surface of leather, which would not reduce permeability of air and water vapor of the leather. Energy Dispersive X-ray Spectroscopy (EDS) was performed to determine the chemical composition of leather surface. The contents of Si and O increased remarkably as leather surface was covered with polymerized VTES. The X-ray Photoelectron Spectroscopy (XPS) showed that the peaks attributed to C=C bonds of VTES and C=O bonds of collagen disappeared after plasma polymerization. All these results demonstrated that VTES was polymerized and deposited on the surface of collagen fibers after plasma treatment, which resulted in a hydrophobic surface of leather. Note de contenu : - EXPERIMENTAL : Materials - Low-pressure cold plasma treatment - Measurement of contact angle and calculation of surface free energy - Characterization of leather surface - RESULTS AND DISCUSSION : Water contact angle and surface free energy - Characterization of leather surface En ligne : https://drive.google.com/file/d/1AR9XKUD_-Ftkk_BNLVFJgK82HQZDg3dp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20720 [article]

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