[article]
| Titre : |
Genipin -aluminium or -vegetable tannin combinations on hide powder |
| Type de document : |
texte imprimé |
| Auteurs : |
Keyi Ding, Auteur ; Maryann M. Taylor, Auteur ; Eleanor M. Brown, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 164-170 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Genipin, a naturally occurring protein crosslinking agent, isolated from the fruit of Gardenia jasmindides Ellis, is beginning to replace glutaraldehyde as a fixative for biological tissues. Earlier research in this laboratory demonstrated that the apparent shrinkage temperature of hide powder could be increased from 60°C to 79°C by treating the powdered hide with 5% genipin at pH ~ 7 and 35°C for 24 hr, a significant improvement, but not enough for most leather uses. Typical tannages proposed to reduce the use of chromium are combinations of vegetable tannins or aldehydes with each other or with minerals. In this study, the tanning effect on bovine hide powder of genipin in combination with aluminum or vegetable tannins has been investigated. In terms of thermal stability, vegetable tannins in combinations with genipin appear to offer little advantage over either component alone, suggesting little if any synergy. Likewise, aluminum tanning over a genipin pretannage appears to provide little advantage. However, when hide powder was first tanned with 8% aluminum and then retanned with genipin the thermal stability increased linearly with increasing concentrations of genipin (2% to 10%). The apparent shrinkage temperature was > 100°C for aluminum post-tanned with 8%-10% genipin, suggesting the possibility that a practical combination tannage based on genipin could be designed. |
| En ligne : |
https://drive.google.com/file/d/15WuLAuVk1cFNZXmbF4ZVZYKNgFRXq5Gf/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3358 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 5 (05/2007) . - p. 164-170
[article]
|
Aller sur edunet
Accueil
Genipin -aluminium or -vegetable tannin combinations on hide powder in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 5 (05/2007)
