Alkyl-Chitosan-Based Adhesive: Water Resistance Improvement

被引：30

作者：

Mati-Baouche, Narimane ^{[1
,2
,3
]}

Delattre, Cedric ^{[1
]}

de Baynast, Helene ^{[1
]}

Grediac, Michel ^{[1
]}

Mathias, Jean-Denis ^{[4
]}

Ursu, Alina Violeta ^{[1
]}

Desbrieres, Jacques ^{[5
]}

Michaud, Philippe ^{[1
]}

机构：

[1] Clermont Auvergne Univ, CNRS, SIGMA Clermont, Inst Pascal, F-63000 Clermont Ferrand, France

[2] Normandie Univ, UNIROUEN, Glyco MEV EA 4358, Glycobiol & Plant Mol Matrix, F-76000 Rouen, France

[3] Normandie Univ, UNIROUEN, SFR NORVEGE, F-76000 Rouen, France

[4] IRSTEA, Lab Engn Complex Syst, 9 Ave Blaise Pascal,CS 20085, F-63178 Aubiere, France

[5] UPPA, CNRS, UMR 5254, Helioparc Pau Pyrenees,IPREM, 2 Ave P Angot, F-64053 Pau 09, France

来源：

MOLECULES | 2019年 / 24卷 / 10期

关键词：

chitosan; alkylation; adhesive; water resistance; DERIVATIVES;

D O I：

10.3390/molecules24101987

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页数：12

共 16 条

[1] Chitosan Amphiphilic Derivatives. Chemistry and Applications [J].