| Titre : |
Novel titanium (IV) tanning for leathers with superior hydrothermal stability : III. Study on factors affecting titanium tanning and an eco-friend titanium tanning method |
| Type de document : |
texte imprimé |
| Auteurs : |
Biyu Peng, Auteur ; Dennis C. Shelly, Auteur ; Haojun Fan, Auteur ; Keyi Ding, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 297-305 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
A novel eco-friendly titanium tanning system based on lactate-masked titanium sulfate solution as the tanning agent was developed. This approach offers enhanced tanning power, compared to previous system. The factors affecting this type of titanium tanning were investigated. The results showed that a conventional pickling process with high NaCl concentration was not suitable for titanium tanning while a pickle-less or salt-free pickling with titanium tanning increased shrinkage temperature (Ts) more than 10oC. The optimum tanning conditions were 7.5%-10% TiO2 offer (based on pelt weight with 65% moisture content), 30% titanium solution basicity and pH 3.5 tanning ending pH (basified by sodium bicarbonate or magnesium oxide). Proper pre-fatliquoring resulted in better titanium tanning agent penetration into the skin. But the pre- and post-treatment with multicarboxylates, acrylic resins and glyoxlic acid did not improve titanium combination with collagen. The shrinkage temperature of the leather was 102oC. The white titanium tanned leather had better strength and fullness than the chrome tanned leather control. But the spongy feel of titanium tanned leather was inferior to chrome tanned leather but superior to aluminum and zirconium tanned leather. The titanium absorption rate was more than 99% and no sodium chloride and/or ammonium salt were discharged. |
| En ligne : |
https://drive.google.com/file/d/18MW-CoIem5meNGo-oG3EmzjdondA-nDt/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3323 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 10 (10/2007) . - p. 297-305
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Novel titanium (IV) tanning for leathers with superior hydrothermal stability in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 10 (10/2007)
