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Physico-chemical and structural studies on leathers tanned using high exhaust basic chromium sulphate salt / Jonnalagadda Raghava Rao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 5 (07/1998)

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIII, N° 5 (07/1998) . - p. 139-147 Titre : Physico-chemical and structural studies on leathers tanned using high exhaust basic chromium sulphate salt Type de document : texte imprimé Auteurs : Jonnalagadda Raghava Rao, Auteur ; T. Ramasami, Auteur ; Balachandran Unni Nair, Auteur ; V. Subramanian, Auteur ; B. Chandrasekaran, Auteur Année de publication : 1998 Article en page(s) : p. 139-147 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : One of the approaches towards minimizing the chrome pollution is to increase the uptake of chromium during tanning through the application of high exhaust basic chromium sulphate slats. A high exhaust chrome tanning salt exhibiting chrome uptake levels of above 82% during tanning has been prepared in our laboratory. The present investigation deals with the influence of high exhaust chrome tanning salt on the hysical, chemical and structural properties of the final leather. The study shows that there is an increasef fixation of chromium to the collagen matrix which in turn influences the uptake of retanning agents, dyes and fatliquors during post tanning operation. This investigation also indicates a realistic saving of 20-25% inpost tanning chemicals when the leathers are tanned with high exhaust BCS salt. Note de contenu : - Tanning trials with commercial BCS salt - Tanning trials with high exhaust BCS salt - Optimization of post-tanning needs of leathers tanned with high exhaust BCS salt - Chemical analysis - Scanning electron microscopy - Physical testing Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4518 [article]

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Persistence of minority macromolecules of hide through the beamhouse. III. Persistence of decorin / Paul L. Kronick in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIII, N° 5 (07/1998)

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIII, N° 5 (07/1998) . - p. 148-155 Titre : Persistence of minority macromolecules of hide through the beamhouse. III. Persistence of decorin Type de document : texte imprimé Auteurs : Paul L. Kronick, Auteur Année de publication : 1998 Article en page(s) : p. 148-155 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Decorin, a small dermatan-sulfate proteoglycan that is located on the surfaces of the collagen fibrils of hide and skin, is a minority macromolecule that might play a role in leather drying. We whox by immunohistological techniques that not even the amino terminal of the molecule, which is not bound directly to collagen, is removed in the beamhouse. Unlike collagens type VI and XIV, it was not found in the grain enamel, Residual decorin might be an important feature of hide and grain quality in leather. Note de contenu : - Bovine hide - Enzymes - Antibodies - Leathermaking process - Immunohistochemistry - Mechanical testing Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4519 [article]

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