Stress-relaxation behavior of leather / M. Komanowsky in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXX, N° 8 (08/1995)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXX, N° 8 (08/1995) . - p. 243-256 Titre : Stress-relaxation behavior of leather Type de document : texte imprimé Auteurs : M. Komanowsky, Auteur ; P. H. Cooke, Auteur ; W. C. Damert, Auteur ; Paul L. Kronick, Auteur ; Michael D. Mcclintick, Auteur Année de publication : 1995 Article en page(s) : p. 243-256 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Leather exhibits a complicated mechanical behavior that can be best explained by using concepts of theoretical viscoelasticity. To permit a mathematical description of the time dependent properties of leather under different testing conditions, springs and dashpots are used. A six-element model comprised of three Maxwell units in parallel satisfactorily described stress-relaxation properties of leather. Scanning-electron micrographs reveal that fibers remain desegregated upon drying of leather in the presence of fatliquor, while stress-relaxation tests show that relaxation moduli and relaxation times decrease with increase in fatliquor content as well as with increase in temperature and moisture content. The results obtainable by the stress relation method should find application in process control, specification acceptance and service evaluation. En ligne : https://drive.google.com/file/d/1dkdbEL3N0LXOtqLxYcgp14wJEYrKJuMV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7932 [article]

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Use of an elastomer formed in situ for softening leather / F. Scholnick in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 8 (08/1994)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXIX, N° 8 (08/1994) . - p. 260-268 Titre : Use of an elastomer formed in situ for softening leather Type de document : texte imprimé Auteurs : F. Scholnick, Auteur ; Paul L. Kronick, Auteur ; Susan K. Iandola, Auteur ; P. H. Cooke, Auteur Année de publication : 1994 Article en page(s) : p. 260-268 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Poly(vinyl oleate) was used as a model compound in a continuing study of polymeric fatliquoring agents. It was emulsion-polymerized in-situ in retanned, non-fatliquored blue stock. The products showed appreciable improvements in mechanical properties, including increased elongation at failure and increased energy to break with no loss in tensile strength. Lower levels of acoustic emission were observed in treated samples, indicating reduction in fiber adhesion. X-ray probe (EDX) microanalysis with the aid of osmium tetroxide was used to locate sites of unsaturation and polymerized vinyl oleate in the interior of the treated leather. En ligne : https://drive.google.com/file/d/1Tyr3SxwtDDgUDygbG_lVfDsHm3dX0NFj/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8060 [article]

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