The effect of cloisite Na+ nanoclay filler on the morphology and mechanical properties of loose leather / Sujay Prabakar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 5 (05/2016)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 5 (05/2016) . - p. 178-184 Titre : The effect of cloisite Na+ nanoclay filler on the morphology and mechanical properties of loose leather Type de document : texte imprimé Auteurs : Sujay Prabakar, Auteur ; Catherine P. Whitby, Auteur ; Anna M. Henning, Auteur ; Geoff Holmes, Auteur Année de publication : 2016 Article en page(s) : p. 178-184 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile Caractérisation Charges (matériaux) Cloisite Cuirs et peaux -- Propriétés mécaniques Ions sodium Morphologie (matériaux) Nanoparticules Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Looseness describes a structural fault in leather, which leads to the development of wrinkles on the surface when the leather is bent inwards. It causes up to 7% of hides processed to finished leather to be downgraded or rejected at final inspection, requiring replacement and causing delay in meeting orders. Fillers can fill the interstitial spaces in loose leathers and make the looseness less pronounced. Here, the effect of Cloisite®Na+, ananoclay filler, on loose cattle hides is investigated by electron microscopy and mechanical characterization. Whilst SEM studies show an apparent filling effect in the grain-corium boundary at increasing concentrations of filler, TEM images show that at an optimum concentration of 3% uniform dispersion of the filler along with good handle can be obtained. A gradual increase in tensile and tear strength is observed with increasing concentration of Cloisite® Na+, however softness measurements correlated with microscopic observations in that only at optimum concentrations can both good handle and mechanical strength be achieved. We discuss a possible mechanism for the change in mechanical properties and handle of the loose leather after treating with Cloisite®Na+. The mechanistic study of such treatments on low quality hides will result in the production of leathers with more uniform cutting area and added functionality. Note de contenu : - EXPERIMENTAL SECTION : Materials - Application of cloisite Na+ to loose leather - Characterization - Physical and mechanical characterization - RESULTS AND DISCUSSION : Physical and mechanical studies of cloisite Na+ treated leather En ligne : https://drive.google.com/file/d/17ECa72PjdsqY5D0R0ZHqZ_lab41Qqjbn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26221 [article]

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