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Influences of drying methods on the thermal stability of leather / Ren Bianli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 1 (01-02/2020)
[article]
Titre : Influences of drying methods on the thermal stability of leather Type de document : texte imprimé Auteurs : Ren Bianli, Auteur ; Fang Qi, Auteur ; Chai Yuye, Auteur ; Xu Xiaohong, Auteur ; Zou Xianglong, Auteur Année de publication : 2020 Article en page(s) : p. 44-46 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- Séchage
Cuirs et peaux -- Analyse
Stabilité thermiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The influences of drying methods on the thermal stability of leather were investigated. The results show that drying methods have an obvious effect on the water content and hydrogen bonds between collagen fibres. The water content of leather after freeze drying is less than that after air drying. The collagen fibres after air drying combine more tightly than after freeze drying. Concerning stronger hydrogen bonds between collagen fibres, the thermal stability of air-dried leather is better than that of freeze-dried leather. Note de contenu : - MATERIALS AND METHODS : Materials - Method
- RESULTS AND DISCUSSION : Influence of drying methods on the structure of leather - Area shrinkage rate - Tg analysisEn ligne : https://drive.google.com/file/d/1Ve8G1wo5hlEuQ99-DNrpf6iV1EsHy7tn/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33543
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 1 (01-02/2020) . - p. 44-46[article]Réservation
Réserver ce documentRetanning mechanism of polyacrylic acid from the point of fibre motion / Zou Xianglong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 6 (11-12/2019)
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Titre : Retanning mechanism of polyacrylic acid from the point of fibre motion Type de document : texte imprimé Auteurs : Zou Xianglong, Auteur ; Fang Qi, Auteur ; Ren Bianli, Auteur ; Chai Yuye, Auteur ; Li Zhongyu, Auteur Année de publication : 2019 Article en page(s) : p. 311-313 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide polyacrylique
Cuirs et peaux -- Analyse
Retannage
Tannage organiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The retanning mechanism of PAA was studied from the point of fibre motion. The stress state of collagen fibres retanned with PAA was analysed and the structure of retanned leather was characterised by SEM and strain-stress analysis. The results show that PAA mainly interacts with collagen fibres by adhesive force (AF) between collagen fibres and capillary flow. As PAA dosage increases, AF increases and the collagen fibre's array becomes more disordered. Note de contenu : - Change of stress state of collagenfibres after being retanned with PAA
- Effect of PAA on the array of collagen fibresEn ligne : https://drive.google.com/file/d/1-Nkf0khxkAo_U7Bmaac-UvAgy90pavNl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33208
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 6 (11-12/2019) . - p. 311-313[article]Réservation
Réserver ce documentTanning properties of 4-((4,6-dichloro-1,3,5-triazin-2-yl) amino) benzene sulfonic acid / Zou Xianglong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 5 (09-10/2019)
[article]
Titre : Tanning properties of 4-((4,6-dichloro-1,3,5-triazin-2-yl) amino) benzene sulfonic acid Type de document : texte imprimé Auteurs : Zou Xianglong, Auteur ; Fang Qi, Auteur ; Chai Yuye, Auteur ; Li Zhongyu, Auteur ; Ren Bianli, Auteur Année de publication : 2019 Article en page(s) : p. 268-271 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Composés organiques -- Synthèse
Cuir -- Stabilité
Tannage organiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this work, a triazine tanning agent of 4-((4,6-dichloro-1,3,5-triazin-2-yl)amino) benzenesulfonic acid (SAT) was prepared with cyanuric chloride and sodium p-aminobenzene sulfonate, its structure was confirmed by FTIR spectroscopy, and its tanning property was investigated. The results indicate that SAT can raise the Ts of tanned skin to around 75°C at the optimised dosage of 3%. The stability of tanned leather was tested by washing with aqueous solution of 10w% urea, lOw% NaCI and 14 acetone. The results of washing show that the tanned leather of SAT has excellent stability and there are stable covalent bond interactions between SAT and collagen fibres. Based on the results of washing and the structure characteristics of SAT, a tanning mechanism of SAT was given in which the second Cl and the third CI on the triazine ring can both react with collagen fibres under mild tanning conditions of 35°C to 45°C. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of SAT - Instrumentation - Tanning procedure - Test of stability of tanned leather
- RESULTS AND DISCUSSION : Structure characterisation of SAT - Effect of tanning temperature on Ts - Tanning stability of SATEn ligne : https://drive.google.com/file/d/1lkLeE9lnQ3jOM8SfxH_y2V9d5wZryfo9/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33002
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 5 (09-10/2019) . - p. 268-271[article]Réservation
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