Alkyl-Chitosan-Based Adhesive: Water Resistance Improvement

Abstract : A chemical modification by grafting alkyl chains using an octanal (C8) on chitosan was conducted with the aim to improve its water resistance for bonding applications. The chemical structure of the modified polymers was determined by NMR analyses revealing two alkylation degrees (10 and 15%). In this study, the flow properties of alkyl-chitosans were also evaluated. An increase in the viscosity was observed in alkyl-chitosan solutions compared with solutions of the same concentration based on native chitosan. Moreover, the evaluation of the adhesive strength (bond strength and shear stress) of both native and alkyl-chitosans was performed on two different double-lap adherends (aluminum and wood). Alkyl-chitosans (10 and 15%) maintain sufficient adhesive properties on wood and exhibit better water resistance compared to native chitosan.
Liste complète des métadonnées

Littérature citée [10 références]  Voir  Masquer  Télécharger

https://hal-normandie-univ.archives-ouvertes.fr/hal-02138130
Contributeur : Arnaud Lehner <>
Soumis le : jeudi 23 mai 2019 - 15:29:22
Dernière modification le : jeudi 22 août 2019 - 11:36:03

Fichier

2019-Mati-Baouche-et-al-Molecu...
Publication financée par une institution

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Citation

Narimane Mati-Baouche, Cédric Delattre, Hélène de Baynast, Michel Grediac, Jean-Denis Mathias, et al.. Alkyl-Chitosan-Based Adhesive: Water Resistance Improvement. Molecules, MDPI, 2019, 24 (10), pp.1987. ⟨10.3390/molecules24101987⟩. ⟨hal-02138130⟩

Partager

Métriques

Consultations de la notice

48

Téléchargements de fichiers

34