Phosphonium-aluminum combination tanning for goat garment leather / Ren Long-Fang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 6 (06/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 6 (06/2009) . - p. 232-241 Titre : Phosphonium-aluminum combination tanning for goat garment leather Type de document : texte imprimé Auteurs : Ren Long-Fang, Auteur ; Wang Xue-Chuan, Auteur ; Qiang Tao-Tao, Auteur ; Ren Yong-Qiang, Auteur ; Xu Jianxin, Auteur Année de publication : 2009 Article en page(s) : p. 232-241 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A new tetrakis hydroxymethyl phosphonium sulphate (THPS)-aluminum combination tanning system has been developed. The optimum dosage of THPS was 2.0%. The amount of THPS and basic aluminum chloride was optimized at 2.0% and 3.0% (basing on the weight of pelt). The influence of ligands on the shrinkage temperature (Ts) of leathers was also studied and the Ts of THPS-aluminum combination tanned leathers was above 88°C. Color fastness to dry/wet rub of THPS-aluminum combination tanned leathers was much better than the relevant color fastness to dry/wet rub of leathers tanned with THPS alone. Scanning electron microscopic studies showed that the fiber weave of THPS-aluminum combination tanned leather was much closer than leathers tanned with THPS alone and the fiber weave of THPS-aluminum combination tanned leather was closer(tighter) with an increase of amount of basic aluminum chloride. Hence, with the increase of the amount of basic aluminum chloride, the reactive ability of basic aluminum chloride with collagen fiber was stronger and the softness became worse. Degradation rate of soiling for the THPS-aluminum combination tanning leather was much quicker than that of chrome tanning leather. Through SEM analysis, the surface structure of leather which was not degraded was more regular than the leather degraded for 30 days. Meantime, the of THPS-aluminum combination tanning leather degradated much more easily than the chrome leather, which suggested a benefit for the sustainable development of the leather industry in future. En ligne : https://drive.google.com/file/d/1rceSxbfqOplHnQS3Mb4wFMBANyf5JUUs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5988 [article]

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Zirconium-oxazolidine combination tannage for sheep garment leather / Qiang Tao-Tao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 2 (03-04/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 2 (03-04/2009) . - p. 35-39 Titre : Zirconium-oxazolidine combination tannage for sheep garment leather Type de document : texte imprimé Auteurs : Qiang Tao-Tao, Auteur ; Wang Xue-Chuan, Auteur ; Ren Long-Fang, Auteur ; Ren Yong-Qiang, Auteur Année de publication : 2009 Article en page(s) : p. 35-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux de moutons Oxazolidine Tannage au zirconium Vêtements en cuir Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Increasing environmental consciousness has impacted on the pollution caused by chrome tanning which has become a difficult problem requiring an urgent solution leading to studies on chrome-free tanning system. A new zirconium-oxazolidine combination tanning system has been developed. The amount of zirconium-oxazolidine has been optimized at 2.5 % and 3.0 % (based on limed weight of skins). The influence of ligands on the shrinkage temperature (Ts) of leathers has also been studied and zirconium-oxazolidine combination tanned leathers showed Ts above 92°C. Zirconium-oxazolidine tanned sheep garment leather is much whiter than the chrome tanned, being close to the standard whiteness. The degradation rate of zirconium-oxazolidine combination leather is 18.83 % after 45 days soil burial and is much quicker than that of chrome tanned leather which is 5.78 % after 45 days. SEM observation revealed that the non-degraded surface structure was more regular than that of chrome leather degraded for 30 days. The zirconium-oxazolidine combination tanned leather degraded more easily than chrome leather, which is of benefit for the sustainable development of the leather industry. En ligne : https://drive.google.com/file/d/1gAsQ1dzoIhDiYfMt3nGAiWnl1bznjaNJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5088 [article]

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