Effect of chrome content in the chrome tanning liquid of the leather tanning machine on the properties of leather / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 1 (01-02/2015)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 1 (01-02/2015) . - p. 33-38 Titre : Effect of chrome content in the chrome tanning liquid of the leather tanning machine on the properties of leather Type de document : texte imprimé Auteurs : Wang Xue-Chuan, Auteur ; Zhang Feifei, Auteur ; Qiang Tao-Tao, Auteur ; Xi Ying, Auteur Année de publication : 2015 Article en page(s) : p. 33-38 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bains de tannage -- Teneur en chrome Caractérisation Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Mesure Tannage -- Appareils et matériels Tannage au chrome Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The effect of chrome content in chrome tanning liquid on the physical and mechanical properties of leather when using the specially designed leather tanning machine were studied and the leather was characterized by EDS and SEM. The results showed that, considering the chrome content in leather and the physical and mechanical properties of leather, the best chrome content in the chrome tanning liquid was 16g/L. The EDS results showed that the distribution of chrome in leather was relatively uniform. The SEM results showed that the collagen fibre dispersion of leather tanned with the leather tanning machine was better than the leather tanned by drum. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Equipment - Experiment operation - Testing characterization - RESULTS AND DISCUSSION : The effect of chrome content in chrome tanning liquid on the shrinkage temperature of leather - The effect of chrome content in chrome tanning liquid on physical and mechanical properties of leather - EDS analysis - SEM analysis En ligne : https://drive.google.com/file/d/1UTIWJ4VvzIQFcgthQU-xPoAjPPglqI3m/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23232 [article]

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Formaldehyde release from chekiang lambskin, characteristic parameter determination and influencing factors / Hao Dong-Yan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 5 (09-10/2019)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 5 (09-10/2019) . - p. 260-267 Titre : Formaldehyde release from chekiang lambskin, characteristic parameter determination and influencing factors Type de document : texte imprimé Auteurs : Hao Dong-Yan, Auteur ; Wang Xue-Chuan, Auteur ; Lu Wei-Na, Auteur ; Li Ji, Auteur Année de publication : 2019 Article en page(s) : p. 260-267 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coefficient de diffusion Un coefficient de diffusion est une grandeur caractéristique du phénomène de diffusion de la matière. Le coefficient de diffusion mesure le rapport entre le flux molaire dû à la diffusion moléculaire, et le gradient de concentration de l'espèce chimique considérée (ou, plus généralement, de la variable d'effort entraînant cette diffusion), comme formulé par la loi de Fick. Cuirs et peaux de moutons Distillation Emissivité En transfert radiatif, l'émissivité correspond au flux radiatif du rayonnement thermique émis par un élément de surface à température donnée, rapporté à la valeur de référence qu’est le flux émis par un corps noir à cette même température. Cette dernière valeur étant la valeur maximale possible, l'émissivité est un nombre inférieur ou égal à l'unité. (widipedia) Extraction (chimie) Fourrures -- Teneur en formaldehyde Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : VOC emissions may cause poor indoor (vehicle cabins included) air quality (IAQ). Recent studies have been conducted on the characteristics of volatile organic compounds (VOCs) emissions, most of them are focused on wood-based building materials, fur or fur imitations are scarcely mentioned. However, formaldehyde or formaldehyde-containing chemicals are often used in the production of fur, resulting in a certain amount of formaldehyde remaining in the finished product. This paper takes formaldehyde (FA) as an example to study its diffusion in fur. In order to understand and control the behaviour of the formaldehyde emission characteristics. Based on detailed mass transfer analysis of the emission process in a ventilated chamber, this paper measured the three emission characteristic parameters, i.e., the initial emittable concentration (C0), the diffusion coefficient (Dm) and the partition coefficient (K). The influence of different factors on the release parameters was also studied, as well as the time required for the emission of formaldehyde under different ventilation rates ; we also compared the formaldehyde results of different test methods. The results showed that both Dm and C, increased as temperature rose, but Co increase is significant. With the increase of relative humidity, Dm decreased but Co increased. In addition, the prediction model agrees well with the experimental data. The greater the ventilation rate, the faster the improvement of air quality standards in the cabin; The initial concentration was less than 43% of the formaldehyde content obtained through the extraction method and less than 4.6% of the formaldehyde content obtained by the distillation method. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Equipment and instruments - Formaldehyde emission test of fur - Extraction method - Distillation method - Mass release model - RESULTS AND DISCUSSION : Effects of different temperatures on the release parameters - The effect of different relative humidity levels on characteristic parameters - Comparison of diffusion coefficient Dm between fur and other materials in the literature - Comparison of release time of formaldehyde in the environmental cabin under different ventilation conditions - Comparison of the initial concentration of fur formaldehyde with the concentration measured by distillation and extraction method - Sensitivity analysis En ligne : https://drive.google.com/file/d/1yku0zJdX5XxuEJ6e7E33dfsg429hja_r/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33001 [article]

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Hyperbranched polymers - A primer for their uses in the leather industry / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 2 (03-04/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 2 (03-04/2006) . - p. 54-57 Titre : Hyperbranched polymers - A primer for their uses in the leather industry Type de document : texte imprimé Auteurs : Wang Xue-Chuan, Auteur ; Qiang Tao-Tao, Auteur ; Ren Long-Fang, Auteur Année de publication : 2006 Article en page(s) : p. 54-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Cuirs et peaux -- Finition Floculant Polymères ramifiés Système de libération contrôlée (technologie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The evolution, structural traits and characteristics of hyperbranched polymers are summarized. Furthermore, the article analyzes the feasibility of their applicability as a new type of tanning agent in leather industry with the possibility of chrome-free leather. The article is intended as a guide and introduction to hyperbranched polymers and their possible applications in the leather industry. Note de contenu : - BACKGROUND : Special features of hyperbranched polymers - APPLICATION FOREGROUND OF HYPEBRANCHED POLYMERS IN THE LEATHER INDUSTRY : Use as tanning and retanning agents - Used to prevent Cr (VI) formation in leather - Use as highly absorptive chrome tanning auxiliaries - Use as finishing agents and auxiliaries - Use as sustained-release agents - Use as levelling and fixing agents - Used as flocculating agents in tanning waste disposal En ligne : https://drive.google.com/file/d/1BpyCZdK6s05GMwWA7gPGuzSPe4ZyP-92/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39157 [article]

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Phosphate modified lanolin fatliquors produced by a sustained-released method / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 6 (11-12/2004)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 6 (11-12/2004) . - p. 228-230 Titre : Phosphate modified lanolin fatliquors produced by a sustained-released method Type de document : texte imprimé Auteurs : Wang Xue-Chuan, Auteur ; Feng Yan-Juan, Auteur ; An Hua-Rui, Auteur ; Sun Ming, Auteur Année de publication : 2004 Article en page(s) : p. 228-230 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Huiles et graisses Lanoline Matériaux -- Modifications chimiques Phosphates Produits de nourriture du cuir Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The synthesis of a phosphate modified lanolin fatliquor was made using ethanolamine via lanoline amidate reaction followed by the phosphate reaction by a sustained-release method using P2O5 dispersed in a solvent. The phosphate reaction confirmed that the best conditions were at 75°C for 2.5 hrs with a 3.0:1.0 molar ratio of hydroxy to P2O5. The result indicated that mole fraction of phosphoric acid monoester (MAP) made by the sustained-release method and the conversion of P2O5 increased by 12.3% and 5.7% respectively compared to the direct addition of P2O5 method. Phosphate fatliquor preparation by this method overcomes the odour problem of lanoline and is controllable. It is an eco-friendly reaction without wastage and is in accord with the demands of green production. Note de contenu : - EXPERIMENTAL DETAILS : Materials - Reaction principal of lanolin and alcohol amine - Reaction principal of phosphate - Phosphate reaction - Analysis and testing the of the chemical intermediate - RESULTS AND DISCUSSION : Amidate reaction of lanolin - Selection of solvent for dispersion of P2O5 11 - The phosphate reaction - Table 1 : Factors and levels - Table 2 : Appearance of the phosphate lanolin synthesised using different solvents - Table 3 : The results of the orthogonal experiment En ligne : https://drive.google.com/file/d/1cOW4Eo0nTk2pNJR_24MBNXwTKXmTnxi1/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39614 [article]

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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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Phosphonium-zirconium combination tannage for goat garment leather / Qiang Tao-Tao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 5 (09-10/2008)

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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)  

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