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Tear strength analysis and micro-characterization of different parts of cattle and sheep / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 108, N° 5 (09-10/2024)
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Titre : Tear strength analysis and micro-characterization of different parts of cattle and sheep Type de document : texte imprimé Auteurs : Zhong Anhua, Auteur ; Guo Yizi, Auteur ; Chen Xiaoting, Auteur ; Zhang Qian, Auteur ; Li Xiaoru, Auteur Année de publication : 2024 Article en page(s) : p. 240-243 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Composés amphotériques
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de bovins
Cuirs et peaux de moutons
Microstructures
Polyvinylamine
Résistance à la déchirureIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper mainly analyzes the tear strength of different parts of cattle and sheep leather, and analyzes the reasons for the differences in tear strength from a microscopic perspective. The sampling of cattle and sheep leather in different parts was carried out and the tear strength data of different parts of cattle and sheep leather were obtained based on the unilateral tear experiment, and the mechanical properties were further analyzed. After the study, it was found that the tear strength of the cattle in the direction parallel to the spine was: neck> belly> back> butt, and the tear strength of sheepskin was: belly> neck> back> butt. Perpendicular to the spine, the tear strength of the cowhide is: neck> back> belly> butt, and the tear strength of sheepskin is: belly> back> neck> butt. The tear strength of sheepskin is generally less than that of cowhide. SEM images and collagen fibre weaving analysis showed that the tear strength of cowhide was greater than that of sheepskin due to differences in collagen orientation, porosity, and fibre bundle diameter. The proportion of the corium and the tightness of the collagen fibres make the tear strength difference between different parts of the cowhide, and tanning will have a greater impact on the parts with tighter fibre weaving. The proportion of the grain, the direction and tightness of collagen fibre weaving affect the difference in tear strength of each part of the sheepskin to a certain extent. Note de contenu : - EXPERIMENTAL DETAILS :
- Experimental instruments
- ExPreparation of amphoteric polyvinylamine retanning agent (A-PVAm)perimental samples
- RESULTS AND DISCUSSIONS :
- Analysis of tear strength of different parts of cattle and sheep leather
- Microscopic analysis of tear strength of cattle and sheep leather
- Fig. 1 : Schematic diagram of the sampling site
- Fig. 2 : Schematic diagram of the sample size
- Fig. 3 : Three-dimensional area diagram of tear strength of different parts of cattle and sheep leather
- Fig. 4 : SEM diagram of cattle and sheep leather
- Fig. 5 : Schematic diagram of OA values
- Fig. 6 : Weaving of collagen fibres before and after leather tanning
- Fig. 7 : Weaving of collagen fibres in various parts of sheepskinEn ligne : https://drive.google.com/file/d/1LIKR1xdjv5dF4Jys1mF1etJMdjU1Hbcr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41601
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 108, N° 5 (09-10/2024) . - p. 240-243[article]Exemplaires
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