| Titre : |
Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part II : Chrome retanned leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
Ramón Palop, Auteur ; Joan Parareda, Auteur ; Olga Ballùs, Auteur ; Agusti Marsal, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 237-239 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chrome hexavalent
Cuir -- Effet du rayonnement ultraviolet
Cuirs et peaux -- Détérioration
Cuirs et peaux -- Effets de la température
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Produits de nourriture du cuir
Retannage
Tannage au chrome
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
In this second part, we assessed the influence of a chromium retanning process applied to wet-blue hides fatliquored with eighteen different fatliquoring agents on yellowing, detanning and Cr(VI) formation after exposure to the separate effects of temperature and ultraviolet light. The results obtained for chromium retanned leathers are compared with those of non-retanned leathers in Part I.
The temperature test gave rise to less yellowing in chromium-retanned leathers than in non-retanned leathers. As for shrinkage temperature, there were no linear variations although a tendency to lower shrinkage in the retanned samples was observed.
Amounts of hexavalent chromium varied as a function of the fatliquor type. It may be concluded that the oxidised chromium present resulted from residual or weakly fixed chromium from the retanning process. Regarding fastness to ultraviolet light, both yellowing and shrinkage temperature reduction were lower in chromium retanned leathers.
Eight fatliquoring agents were selected in line with the results obtained. Their behaviour with respect to physical and organoleptic properties was compared with that of a sulphated triglyceride used as reference. The most suitable fatliquoring agents were suggested for four different leather articles. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE : Materials and methods - Evaluation of the treated samples
- RESULTS AND DISCUSSION : Effect of temperature - Effect of light
- BEHAVIOUR OF SELECTED FATLIQUORING AGENTS V. PHYSICAL AND ORGANOLEPTIC PROPERTIES : Comparison with a standard process - Results
- CONCLUSIONS : Selection of fatliquoring agents for different leather articles
- Table 1 : Process details
- Table 2 : Fatliquoring agents used with their iodine index
- Table 3 : Variation of the properties (%Δ) compared with the reference except fogging, which refers to the absolute values for each fatliquoring agent |
| En ligne : |
https://drive.google.com/file/d/1U17gAnTjeWUhI1pnG6jm0c0MEj4I70j9/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38991 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 6 (11-12/2008) . - p. 237-239
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Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part II : Chrome retanned leathers in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 6 (11-12/2008)
