| Titre : |
An exploration of enhancing thermal stability of leather by hydrophilicity regulation : effect of hydrophilicity of phenolic syntan |
| Type de document : |
texte imprimé |
| Auteurs : |
Sun Qingyong, Auteur ; Zeng Yunhang, Auteur ; Yue Yu, Auteur ; Ya-Nan Wang, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
10 p. |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux -- Analyse
Cuirs et peaux -- Teneur en eau
Dynamique moléculaire
Hydrophobie
Phénoplastes
Retannage
Simulation, Méthode de
Stabilité thermique
Syntans
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Effect of retanning on the thermal stability of leather is eliciting increasing attention. However, the relationship between the hydrophilicity of retanning agents and the heat resistance of leather and the corresponding mechanism remain unclear. Herein, phenolic formaldehyde syntans (PFSs) were selected as models to explore the effect of the hydrophilicity of retanning agents on the thermal stability of retanned leather. The thermal stability of leather was closely correlated to the hydrophilic group content (sulfonation degree) of PFSs. As the sulfonation degree increased, the water absorption rate of PFSs and their retanned leathers decreased, whereas the thermal stability of leather increased. Molecular dynamics simulation results proved that the introduction of PFSs could reduce the binding ability of collagen molecules with water and thus decreased the water molecules around the PFS-treated collagen. These results may provide guidance for the tanners to select retanning agents reasonably to improve the thermal stability of leather. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Water adsorption behavior of PFSs - Retanning experiments - Analysis of leather - MD simulation
- RESULTS AND DISCUSSION : Effect of DS on the water adsorption behavior of PFSs - Effect of DS on the water adsorption of PFSs retanned leather - Effect of DS on the thermal stability of PFSs retanned leathers
- Table 1 : Retanning and fatliquoring processes
- Table 2 : Sequence of the collagen peptide used for constructing collagen model
- Table 3 : Simulation details
- Table 4 : Adsorption kinetics parameters fitted by the pseudo-second-order rate model
- Table 5 : Weight loss of PFSs retanned leathers and control leather at different stages and residual weight |
| DOI : |
https://doi.org/10.1186/s42825-022-00096-1 |
| En ligne : |
https://link.springer.com/content/pdf/10.1186/s42825-022-00096-1.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38217 |
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 4 (Année 2022) . - 10 p.
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