Titre : |
Insight into the correlations between fiber dispersion and physical properties of chrome tanned leather |
Type de document : |
texte imprimé |
Auteurs : |
Xiu He, Auteur ; Wei Ding, Auteur ; Yunhang Zeng, Auteur ; Yue Yu, Auteur ; Jianfei Zhou, Auteur ; Bi Shi, Auteur |
Année de publication : |
2020 |
Article en page(s) : |
p. 23-29 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Catégories : |
Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuir -- Teneur en chrome trivalent Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Douceur (toucher) Fibrilles de collagèneLa fibrille de collagène est une structure constituée d'un assemblage de fibres de tropocollagène (assemblage de 3 protéines de collagène alpha (alpha 1 - alpha 1 - alpha 2) en une hélice droite. Perméabilité Tannage au chrome Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
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Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
Résumé : |
The correlations between fiber dispersion and physical properties of chrome tanned leather were investigated to provide new insights into improving leather quality and designing tanning agents and tannages. Wet blues were prepared by tanning pickled pelts with different amounts of chrome powder, and their pore structures in the range of 5.48 nm-120 pm were measured using a mercury intrusion porosimetry (MIP). The porosity and total pore area of wet blue increased with increasing amount of chrome powder from 2% to 8%. These MIP data combined with the images observed using a field emission scanning electron microscopy and a scanning transmission electron microscopy-energy dispersive spectroscopy indicated that chrome tanning agent opened up the microfibrils, fibrils, elementary fibers and fiber bundles of wet blue. The sufficient fiber dispersion of wet blue was attributed to the fact that chrome tanning agent penetrated into the microfibrils and fixed collagen fibers from microfibril level to fiber bundle level. The wet blues were then fatliquored to prepare crust leathers. The tensile strength, tear strength, elongation at break, softness, fullness and water vapor permeability of the leathers improved with increasing chrome powder. These results implied that there is a positive correlation between fiber dispersion and physical properties of chrome tanned leather. |
Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of wet blue and crust leathers - Morphological observation - Measurement of pore structure - Determination of chrome content - Determination of physical properties of crust leather
- RESULTS AND DISCUSSION : Fiber dispersion of wet blue - Fiber dispersion of crust leather - Physical properties of crust leather |
En ligne : |
https://drive.google.com/file/d/158MUbaEg_JBNZr1geOcn0aVp-SI0MJgy/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33394 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 1 (01/2020) . - p. 23-29