| Titre : |
Development of a leather processing method in narrow pH profile : Part 1. Standardisation of dehairing process |
| Type de document : |
texte imprimé |
| Auteurs : |
Palanisamy Thanikaivelan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 276-284 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux
Epilage enzymatique
Essais dynamiques
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
An attempt has been made to develop a method for processing leathers in a narrow range of pH viz., 4.0 8.0. A process for dehairing at a pH of around 8.0 has been explored. This has been achieved by employing a commerical enzyme in combination with small quantifies of sodium sulphide. A method for applying the dehairing formulation on the grain side was established. Hair removal was shown to be complete using scanning electron microscopy (SEM ) and cystine content analysis. Potential grain damage by the enzyme formulation was avoided through process control measures and the effectiveness of such methods was established by investigation by scanning electron micrographs. Strength and bulk properties of the experimental leathers appear to show some improvement as compared to the leathers made using conventional processes. The process enjoys an environmental benefit by significantly reducing the COD load in the effluent. Improved chrome content in the grain surface of the butt region adds an additional benefit to the dehairing process developed. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE : Standardisation of dehairing process - Comparison of effectiveness of the developed process with a conventional unhairing process
- RESULTS AND DISCUSSION : Standardisation of dehairing system - Developed dehairing process vs conventional dehairing process
- Table 1 : Composition of paste for determination of depilatory mixture
- Table 2 : Composition of paste for different methods of application
- Table 3 : Composition of paste for optimisation of depilatory mixture
- Table 4 : Physical testing of control and experimental leathers
- Table 5 : Stratigraphic distribution of chromium
- Table 6 : Composite liquor analysis |
| En ligne : |
https://drive.google.com/file/d/1UYGono16nGaXlpW4eI3EptAUIpd2gY6A/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40819 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 84, N° 6 (11-12/2000) . - p. 276-284
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Development of a leather processing method in narrow pH profile : Part 1. Standardisation of dehairing process in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 6 (11-12/2000)
