[article]
| Titre : |
Studies on tanning with zirconium oxychloride : Part I. Standardization of tanning process |
| Type de document : |
texte imprimé |
| Auteurs : |
A. Sundarrajan, Auteur ; Balaraman Madhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 101-106 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Concern over environmental toxicology and demand for safe disposal of process wastes are topics of current interest. Although chromium(III) salts find extensive usage in leather processing, the environmental concerns of the leather industry for chromium pollution has led to search for alternative tanning agents. Zirconium salts seem to have the potential for their long-term sustenance in tanning processes. There are several reports on the use of sulphate salts of zirconium in tanning, but the associated disadvantages are poor solubility, drawn grain etc., which have limited their use as a tanning salt. Hence, exploration of other zirconium salts, like zirconium oxychloride as tanning agent is essential. The present investigation focuses on the development of a tanning system using zirconium oxychloride by proper ligation. Zirconium oxychloride with different ligating environments have been employed for tanning experiments. Hydrothermal stability of leathers as high as 95°C has been obtained. Citric acid has been found to be a better ligand, which produces leathers with high hydrothermal stability as compared to other ligands. The precipitation point of zirconium oxychloride solutions with and without citric acid masking has been determined. The amount of tanning salt and ligand used have also been standardized to obtain leathers with properties comparable to those of conventional chrome-tanned leather. |
| En ligne : |
https://drive.google.com/file/d/1ULqGhdng4hGmlruZEYEhk8bF0366caBC/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4098 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 3 (03/2003) . - p. 101-106
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Studies on tanning with zirconium oxychloride : Part I. Standardization of tanning process in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 3 (03/2003)
