[article]
| Titre : |
Cost effective fixing process for post tanning operation |
| Type de document : |
texte imprimé |
| Auteurs : |
N. N. Fathima, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 100-106 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Post tanning is an important unit process in leather manufacturing because it imparts bulk properties to leather. Formic acid is used as a fixing agent during the post tanning operation for fixing the post tanning chemicals ; namely, dye, fatliquor and retanning agents. However, formic acid, being an organic acid, is expensive in nature. In order to make the fixing operation a cost effective process, replacement of formic acid by other mineral acids has been attempted in this study. Various combinations of organic and mineral acids were attempted to achieve the desired properties. Both sulfuric and hydrochloric acids have been used as fixing agents in the presence of formic acid either as serial addition or as combined addition. It has been observed that both the acids can be used for fixing in admixture with formic acid, with HCI giving slightly better organoleptic properties. Leathers obtained from various studies indicate that both sulfuric and hydrochloric acid in combination with formic acid resulted in properties comparable to that of the control leathers. Estimation of water solubles from experimental leathers indicated that the pH and leaching of dye are similar to that of the control leathers. No significant changes in the organoleptic and strength properties, and fiber structure of leathers were observed. Hence, fixing with a combination of mineral and formic acid is a feasible cost effective alternative for fixing of post tanning chemicals. |
| En ligne : |
https://drive.google.com/file/d/1P9Tdn5HlHKdPiaYbTN5DtuqckWhFAnps/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8735 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 3 (03/2010) . - p. 100-106
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Cost effective fixing process for post tanning operation in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 3 (03/2010)
