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Dyeing properties of natural leather using red natural dyes / Sang Chul Lee in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 6 (11-12/2014)
[article]
Titre : Dyeing properties of natural leather using red natural dyes Type de document : texte imprimé Auteurs : Sang Chul Lee, Auteur ; Eun Chul Shin, Auteur ; Won Ju Kim, Auteur Année de publication : 2014 Article en page(s) : p. 252-258 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Champignons microscopiques
Cochenilles
Colorants végétaux
Cuirs et peaux -- Teinture
Extraction (chimie)
Frottements (mécanique)
Photostabilité
Plantes tinctorialesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : An environment-friendly, non-toxic, red-dyed leather was developed using four naturel dyes -cochineal, lac, beet red, and monascus. The affects of the dye concentration, dyeing time, and temperature on the light fastness, rubbing fastness, colour difference, and K/S values (i.e., each dyed sample's apparent depth value) were investigated to find the hast natural dye for eco-dyeing the Ieather. When dyeing the leather red, the K/S value generally increased as concentrations of cochineal, monascus, lac, or beet red dyes were increased. However, the increase in the K/S value was substantially lowered when more than 5.0% o.w.l. (on the weight of Ieather) was used, indicating that the optimal dye concentration is 5.0 % o.w.l. A dyeing Urne of 100 minutes was found to be optimal because the K/S value stabilized aller 100 minutes. The use of cochineal 5.0 % o.w.l. resulted in a 9.18 RP (plum) and the use of lac 5.0 % o.w.l. resulted in a 9.52 RP. These resuits indicate colours that were the closest to red. Their ?E* values, which were the levelling property indicators of the leather, were 0.56 and 0.13, respectively, showing superior characteristics compared to the other two dyes. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and apparatus - Process of leather manufacturing and extraction of natural dyes - Measuring of physical properties
- RESULTS AND DISCUSSION : pH change with natural dye content - Effect of dyeing time on colour - Effect of the concentration of natural dyes on colourEn ligne : https://drive.google.com/file/d/1lYRs_tVWfcynfmT9IFH0GUGfzUE5c16R/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22646
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 98, N° 6 (11-12/2014) . - p. 252-258[article]Réservation
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