[article]
| Titre : |
Studies on the influence of proteolytic enzymes in leather dyeing |
| Type de document : |
texte imprimé |
| Auteurs : |
Swarna Vinodh Kanth, Auteur ; S. Sadulla, Auteur ; Chandra Babu Narasimhan Kannan, Auteur ; Arjunan Yasothai, Auteur ; P. Chitra, Auteur ; Malathy Jawahar, Auteur ; Balaraman Madhan, Auteur ; R. Venba, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 435-443 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Dyeing is an important process in the leather industry. It is well known that many of the dyes used do not exhaust completely and this causes concern, as the biotreatability of the unexhausted dyes in effluent is normally difficult. Environmental concern demands the improvement of the exhaustion of dye. To achieve increased uptake of dye, an eco-friendly dyeing process is designed using enzymes. The effect of varying conditions of enzymatic treatment on the exhaustion of the dye, levelness of the dyeing, shade brightness and color intensity have been studied and the conditions optimized. The improvement in dye exhaustion is accomplished using extremely low amounts of enzymes in the presence of other post tanning auxiliaries at optimized pH, temperature and running time. The change in shades obtained is quantified by reflectance measurements and compared with the visual assessment data. Scanning electron microscopy analysis showed an opened up and cleaned fiber matrix with enzymatic treatment. The bulk properties viz., softness and grain smoothness are found to be marginally improved in the enzyme treated leathers. The strength properties are not significantly altered by the use of enzymes in the post tanning process. |
| En ligne : |
https://drive.google.com/file/d/1M5EoprOEdJg2hG7DlXzk2ZVNqOyT1NwK/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3852 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 12 (12/2006) . - p. 435-443
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