[article]
| Titre : |
Development of natural colors in Cr-Fe tanned upper leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
Jonnalagadda Raghava Rao, Auteur ; C. Prabhakar, Auteur ; R. Rajapandian, Auteur ; Palanisamy Thanikaivelan, Auteur ; J. Malathi, Auteur ; Balachandran Unni Nair, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 267-283 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Dyes based on synthetic formulations are being widely used in the leather industry. However, it is known that many aryl amine dyes are banned due to their carcinogenic nature. Environmental concern leads one to look for dye products based on natural resources, which have several advantages like biodegradability, less toxicity, etc. The basis of this approach is to achieve an eco-friendly dyeing process with the use of iron salts, which give rise to various colors on reacting with vegetable tannins. Goatskins have been tanned with Cr-Fe tanning salt and striked with different vegetable tanning materials like wattle, chestnut, myrobalan and quebracho at various concentrations. Colors like brown, bluish black, deep black and grey shades have been developed. The color shades obtained have been quantified by reflectance measurements and compared with the visual assessment data. The strength and bulk properties are not significantly altered by increasing the concentration of various vegetable tannins from 1 to 5%. However, treatment with 5% wattle decreases the strength properties of the leathers appreciably due to its heavy filling nature coupled with prior filling using co-filling syntans. |
| En ligne : |
https://drive.google.com/file/d/1V2CEzpPOP0NqfSdqEwjsHzy5U6UKp9Bf/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4287 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVII, N° 7 (07/2002) . - p. 267-283
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