A novel chromium-iron tanning agent cross-fertilization in solo tannage / P. Thanikaivelan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 2 (03-04/2000)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 84, N° 2 (03-04/2000) . - p. 82-87 Titre : A novel chromium-iron tanning agent cross-fertilization in solo tannage Type de document : texte imprimé Auteurs : P. Thanikaivelan, Auteur ; V. Geetha, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; Balachandran Unni Nair, Auteur Année de publication : 2000 Article en page(s) : p. 82-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Caractérisation Chimie analytique Chrome Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Fer Tannage minéral Tannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Ecological pressures on chromium have now forced the leather industry to look for possible alternatives. Since chromium appears to be indespensible to the leather industry, we must look for low chrome technology. In this connection, the present study concerns iron as a tanning agent along with chromium in a selected ligand environment. The study reveals that the exhaustions of both the metals were above 90% with shrinkage temperature above 115 C. The negative attributes associated with iron tanning such as deterioration and darkening of colour on ageing were negated with this product. In view of improved organoleptic properties coupled with enhanced physico-chemical properties, it is appropriate to promote the novel chromium-iron tanning agent to replace basic chromium sulphate in tanning with the slogan "chrome saver approach". The work provides a starting point for the revival of iron tannage, opening new avenues to eco-friendly leather processing. Note de contenu : - Experimental : Preparation of Cr-Fe tanning salt - Characterisation of the tanning salt - Tanning trials and examination of the leather : Differential Scanning Calorimetric analysis of the tanned leather - Scanning Electron Microscope analysis - Ageing—effects on strength - Ageing-effects on colour - Chemical and physical analysis - Results and disussion - Table 1 : Constituents and characteristics of Cr-Fe tanning salt - Table 2 : Spent tan liquor analysis and shrinkage temperature values - Table 3 : Tensile strength and % elongation at break measurements before and after ageing for one year - Table 4 : Physical properties of Cr-Fe tanned leathers - Table 5 : Chemical constituents in the Cr-Fe tanned leather En ligne : https://drive.google.com/file/d/1LVzLk_83CO5uYh9rLzyXwlEonqIoqSkQ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41463 [article]

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