[article]
| Titre : |
Natural dyeing of leathers using natural materials |
| Type de document : |
texte imprimé |
| Auteurs : |
Jonnalagadda Raghava Rao, Auteur ; Balachandran Unni Nair, Auteur ; Subramani Saravanabhavan, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; E. Thangaraj, Auteur ; A. Prakash, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 68 - 75 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Environmental constraints on discharge of dye containing wastewater has forced us to look for natural dyes, which have several advantages like low toxicity, cheap and easy availability etc. Natural dyes are obtained from plants (e.g., Alizarin, Catechu, Indigo and Logwood), from animals (e.g., cochineal, kermes and tyrian purple) and from certain naturally occurring minerals (e.g., Ocher and Prussian blue). In this study, an attempt has been made to develop leathers, colored using natural dyes such as Rhine, Rhine M, Indus, Pacific, Caspian, Henna and modified Logwood. This study would be more beneficial to the leather industry. Also, an effort has been made to produce wide range of shades through mordanting with eco-benign metals such as aluminum, copper and tin. Twenty four shades were developed using combination of seven natural colorants by mordanting with three metal ions. The reflectance spectra for all colors have been studied. The visual appearance and their fastness properties have also been evaluated and the test results are satisfactory. Developed colors have potential value in the global leather market in the context of environmentally benign leather processing. |
| En ligne : |
https://drive.google.com/file/d/1IsXxfOTT9oPapQ4D3b48xdviNjBWYnj2/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2574 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 3 (02/2008) . - p. 68 - 75
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