| Titre : |
The reinforcement of leather split by constructing an interpenetrating network via in-situ recombination of PVA |
| Type de document : |
texte imprimé |
| Auteurs : |
Xu Weixing, Auteur ; Hui Zeng, Auteur ; Jianfei Zhou, Auteur ; Ya-Nan Wang, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 255-263 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Composites
Composites -- Propriétés mécaniques
Composites -- Propriétés thermiques
Cuirs et peaux
Matériaux -- Renforcement
Polyacétate de vinyle
Polymères -- Propriétés mécaniques
Potentiométrie
Réseaux polymères
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In order to improve the quality and utilization of leather split, the strength of leather split should be enhanced. The in-situ polymerization of some monomers has proven to be an effective approach in constructing an interpenetrating network (IPN) in split and increasing its strength. But this method is almost unacceptable in practice because of the use of volatile monomers and organic solvents. In this study, a new method to construct the IPN structure in split, in-situ recombination, was developed. Polyvinyl alcohol (PVA) was used as compositing agent, and its molecular structure and modification conditions were optimized. Scanning electron microscope (SEM), potentiometric analyzer and differential scanning calorimeter (DSC) were used to characterize the mechanism of in-situ recombination. The results suggested that PVA with an average polymerization degree of 500 and an average alcoholysis degree of 88% could enhance the strength of split most effectively through compositing reaction of PVA and split in 5% PVA aqueous solution for 120 min under 80°C and pH 7.0. The IPN structure was successfully constructed between PVA and collagen fibers via in-situ recombination. A method to enhance the strengths of leather split with practical application was established. |
| Note de contenu : |
- EXPERIMENTAL : Materials and equipment - Preparation of PVA/split composites - Measurements and instruments
- RESULTS AND DISCUSSION : Effect of compositing time on mechanical properties of PVA/split composites - Effect of polymerization degree and alcoholysis degree of PVA on mechanical properties of PVA/split composites - Effect of PVA concentration on mechanical properties of PVA/split composites - Morphology analysis of PVA/split composite - Potentiometric analysis of PVA/split composite - Thermal behavior of PVA/split composite |
| En ligne : |
https://drive.google.com/file/d/1k-il4rNBlYeS-mLyrSM8DIC2KCqz1VkM/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30842 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 8 (08/2018) . - p. 255-263
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The reinforcement of leather split by constructing an interpenetrating network via in-situ recombination of PVA in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 8 (08/2018)
