| Titre : |
Leather fatliquor from hide fleshings |
| Type de document : |
texte imprimé |
| Auteurs : |
M. A. Habib, Auteur ; A. G. Alshammari, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 199-204 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bisulfite de sodium
Cuirs et peaux -- Déchets -- Recyclage
Cuirs et peaux -- Propriétés mécaniques
Echarnage
Emulsions
Huiles et graisses
Produit animal
Produits de nourriture du cuir
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The huge amount of fleshings from tanneries around the world creates a negative environmental impact, in addition to disposal costs ; these wastes are not well used. This paper presents some innovative processes for reclaiming the fats carried by a large variety of flesh hides or skin wastes, along with the fatty matter separation and modification to obtain a surface active material intended to be used as leather softening agents.
The fat was extracted with hot water at a fixed temperature (85 +/- 5°C, solid : water 1:1 w/v and 2 hours stirring time). The fat rich phase was then separated and purified with n-hexane (fats : n-hexane 1:8 w/v, ambiant temperature and one hour stirring time). The fat was cooled to 12°C and filtered under pressure to isolate the unsaturated oleic fraction and exclude the stearic fraction. The chemical evaluation of oleic fraction indicated that it was suitable for the production of leather softening (fatliquoring) agent. The product was treated with sodium bisulfite (1,5 mol/kg based on weight of fat, 85°C, 2 hours stirring and continuous air flow). A good quality fatliquoring agent was produced. Application of the fatliquor emulsion on wet-blue leather showed enhanced mechanical properties, tensile strength, elongation and improved appearance. Thereby the waste was transformed into a valuable resource. |
| Note de contenu : |
- METHODS : Separation of fat from fleshings - Separation of unsaturated oleic fraction from saturated stearic fraction - Analysis of unsaturated oleic fraction - Sulfitation process - Analysis of sulfited fat - Evaluations of fatliquor emulsion - Fatliquoring process - Evaluation of fatliquored leather - Scanning electron microscope
RESULTS AND DISCUSSION : Chemical evaluation of unsaturated fatty matter - Evaluations of fatliquor stability - Characteristics of fatliquored leather |
| En ligne : |
https://drive.google.com/file/d/1zLV6QB-SAddcE_Eu93_d_uppib5fTtfI/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22209 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 98, N° 5 (09-10/2014) . - p. 199-204
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