Tambaqui (Colossoma macropomum) leather tanning : a study on the influence of skin morphology on the physical-mechanical properties of leather / Jessica Valéria Campos in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 2 (02/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 2 (02/2024) . - p. 91-100 Titre : Tambaqui (Colossoma macropomum) leather tanning : a study on the influence of skin morphology on the physical-mechanical properties of leather Type de document : texte imprimé Auteurs : Jessica Valéria Campos, Auteur ; Fernanda Ramalho Procopio, Auteur ; Waldomiro Barioni Júnior, Auteur ; Ana Rita de Araujo Nogueira, Auteur Année de publication : 2024 Article en page(s) : p. 91-100 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de Poissons Essais de résilience Essais dynamiques Peau -- Anatomie et histologie Prétannage Retannage Statistique Tannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The fish production chain presents losses of up to 35%, generating a large amount of waste. Using these residues to produce valueadded materials boost fish production towards a sustainable path. The use of fish skin to obtain leather is increasingly attracting the market for fashion and luxury products. Besides considered an exotic material with a unique design, fish leather also has good mechanical properties. Due to the morphology of fish skin, different mechanical responses can be observed, depending on the leather cutting direction. However, there are no specific technical standards for sampling this material. In this scenario, 45 Tambaqui skins were tanned with chromium associated with oxazolidine, and the mechanical properties of the leather were evaluated in four cutting directions: parallel, perpendicular, dorsal-ventral and ventral-dorsal, all concerning the cephalocaudal line of the fish. Skin and leather micrographs revealed layers of parallel collagen fiber bundles distributed in superimposed layers oriented obliquely to the preceding one. Insertions of collagen fibers perpendicular to the leather surface were also observed, joining the deeper layers to the superficial layers. Tensile strength (TS) and elongation (E) results indicated statistical differences, with higher TS results for the perpendicular cut and greater elongation for the parallel cut. The tear strength was higher for the ventral-dorsal cut, statistically differing from the parallel cut. The data indicate that the cutting direction of the specimen can influence the physical-mechanical behavior of the leather, reinforcing the importance of standardization for the qualitative evaluation of fish leather. Note de contenu : - MATERIAL AND METHODS : Material - Methods : Fish skin composition - Histological analysis of Tambaqui skin - Tanning process - Tambaqui leather scanning electron microscopy (SEM) analysis - Tensile and tear strength tests - Statistical analysis - RESULTS AND DISCUSSION : Tambaqui skin composition - Histological analysis of Tambaqui skin - Scanning electron microscopy (SEM) analysis of Tambaqui leather - Tensile and tear strength tests - Table 1 : Pre-tanning process conditions of Tambaqui skin - Table 2 : Tanning process conditions of Tambaqui skin - Table 3 : Retanning and finishing process conditions of Tambaqui leather DOI : https://doi.org/10.34314/jalca.v119i2.8326 En ligne : https://drive.google.com/file/d/1GfVdF1NLXOJXyYEPqwuxmpRJ-wmLdA86/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40469 [article]

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