京尼平
壳聚糖
胶粘剂
材料科学
吸水率
增塑剂
肿胀 的
化学工程
耐水性
复合材料
流变学
高分子化学
图层(电子)
工程类
作者
Jeanne Silvestre,Hélène de Baynast,Philippe Michaud,Cédric Delattre
标识
DOI:10.1080/00218464.2023.2270416
摘要
ABSTRACTChitosan is a polysaccharide resulting from chitin deacetylation. It has demonstrated interesting characteristics in the field of adhesion but loses most of its adhesive resistance in moist environment. A chemical crosslinking of chitosan with genipin has been implemented to improve its adhesive properties in the presence of water. The study of crosslinking kinetics using rheology revealed its dependency on crosslinking rate and chitosan concentration. The capacity of the chitosan-genipin systems for water absorption has been quantified as their Free Swelling Capacity. The cross-linkage of chitosan by genipin (1% w/w) decreased significantly its ability for water absorption. Finally, the adhesive strength of several chitosans be they supplemented or not with genipin and/or glycerol used as plasticizer have been performed on Thick Adherent Shear Test samples of beech wood according to standard EN 204:2016 and EN 205:2016. The chitosan adhesive formulation containing genipin and glycerol exhibits the better adhesive properties on wood and presents higher water resistance compared to the native chitosan formulation.KEYWORDS: Adhesivechitosanwoodgenipincross-linkage Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe data presented in this study are available on request from the corresponding author.Additional informationFundingThis work was supported by the Région AuRA(France), Pack Ambition Recherche ChitoGlue project n°DRV_SIP_2020-043_Chitoglue.
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