| Titre : |
The improvement of dispersity, thermal stability and mechanical properties of collagen fibers by silane modification : an exploration for developing new leather making technology |
| Type de document : |
texte imprimé |
| Auteurs : |
Shuangfeng Xu, Auteur ; Hanzhong Xiao, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
11 p. |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Collagène
Cuirs et peaux
Procédés de fabrication
Réaction de couplage
Silanes
Stabilité thermique
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The effect of hydrophobic modification on the performances of collagen fibers (CFs) was investigated by using silane coupling agents with different alkyl chains as hydrophobic modifiers. It was found silane could be easily grafted onto CF surface through covalent bonds under 5% water content. This modification led to the transformation of surface wettability of CF from hydrophilic to hydrophobic. Interestingly, the change of surface wettability resulted in substantial improvement of the modified CF properties, presenting well dispersity of collagen fibers, higher thermal stability and enhanced mechanical properties in comparison with natural CF. The degree of improvement mainly depended on the length of alkyl chain in silane. Longer alkyl chain produced strong hydrophobicity and subsequently more superior performances of the modified CF. When the length of alkyl chain increased to 18 carbon atoms, the modified CF possessed durable superhydrophobicity even exposed to aqueous solutions of different pH, UV, and organic solvents, and had excellent thermal and mechanical properties like leather fibers. In general, this work clearly revealed that the properties of CF are closely and positively related to the hydrophobicity, which is suggestive in developing new leather making technology. |
| Note de contenu : |
- Materials
- Fabrication of dehydrated collagen fibers (CFs)
- Fabrication of hydrophobic collagen fibers (TMSx-CF)
- Characterization |
| DOI : |
https://doi.org/10.1186/s42825-022-00100-8 |
| En ligne : |
https://link.springer.com/content/pdf/10.1186/s42825-022-00100-8.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38220 |
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 4 (Année 2022) . - 11 p.
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The improvement of dispersity, thermal stability and mechanical properties of collagen fibers by silane modification : an exploration for developing new leather making technology in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
