Accueil
Détail de l'auteur
Auteur W. Madhulatha |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Coloring of leather using henna - natural alternative material for dyeing / A. E. Musa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 5 (05/2009)
[article]
Titre : Coloring of leather using henna - natural alternative material for dyeing Type de document : texte imprimé Auteurs : A. E. Musa, Auteur ; Balaraman Madhan, Auteur ; W. Madhulatha, Auteur ; Jonnalagadda Raghava Rao, Auteur ; G. A. Gasmelseed, Auteur ; S. Sadulla, Auteur Année de publication : 2009 Article en page(s) : p. 183-190 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Synthetic dyes are widely used in the leather industry; some of these are carcinogenic in nature. Environmental concern leads one to seek dye products based on natural resources, which have several advantages like less toxicity, biodegradability, etc. The research work presented in this paper focuses on an eco-friendly dyeing process of the leather using aqueous henna leaves extract that contain lawsone, 2-hydroxy 1,4 naphthaquinone, the most prominent member of alpha – hydroxynaphthaquinone, natural dye class. The aqueous extraction from the henna leaves was studied and the best extraction conditions were found to be the maceration of the ground henna leaves in water, at temperature (> 80°C) for 60 minutes in a water bath without agitation. The color of the leather had become deeper with increasing amount of henna extract and multiple colors have been obtained depending on the type of mordants used. The henna dyeing had resulted in leathers with good rub (dry and wet) and perspiration fastness characteristics, while the light fastness characteristics were found to be moderate. En ligne : https://drive.google.com/file/d/1CW56u-TUPgTxFPrHbzc3eElLF5qzkeeO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5220
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 5 (05/2009) . - p. 183-190[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011294 - Périodique Bibliothèque principale Documentaires Disponible Henna extract : Can it be an alternative retanning agent ? / A. E. Musa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 6 (06/2008)
[article]
Titre : Henna extract : Can it be an alternative retanning agent ? Type de document : texte imprimé Auteurs : A. E. Musa, Auteur ; G. A. Gasmelseed, Auteur ; S. Sadulla, Auteur ; W. Madhulatha, Auteur ; Balaraman Madhan, Auteur Année de publication : 2008 Article en page(s) : p. 188 - 193 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Extract from the leaves of lawsonia inermis (henna), widely distributed in Sudan, has been evaluated for its utilization in the retanning of the leather and presented in this paper. Leaves of henna have been extracted for 1 hour with distilled water (1:10 w/v) at temperature above 80°C. The henna extract prepared has been used for the retanning of wet blue leathers. The effectiveness of henna extract in retanning of wet blue leathers has been compared with wattle retanning. The organoleptic properties of the leathers viz. softness, fullness, grain smoothness, grain tightness (break), general appearance, uniformity of dyeing of henna retanned leather have been evaluated in comparison with wattle retanned leathers. Henna retanning resulted in leathers with good grain tightness. Dyeing characteristics of henna retanned leathers have been found to be better than wattle retanned leathers. Also physical strength characteristics, shrinkage temperature and economic viability were noted. The effluent arising from this retanning system has been analyzed for its environmental impact. En ligne : https://drive.google.com/file/d/1PjhdcJB92GZqU_JJ2W2U1YWRNlL1dv2g/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2562
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 6 (06/2008) . - p. 188 - 193[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 010401 - Périodique Bibliothèque principale Documentaires Disponible