文献类型：期刊文献

英文题名：Cross-linked peach gum polysaccharide adhesive by citric acid to produce a fully bio-based wood fiber composite with high strength

作者：Wu, Qiao[1] Jiang, Ke[1] Wang, Yong[2] Chen, Yuan[1] Fan, Dongbin[1]

第一作者：Wu, Qiao

通信作者：Fan, DB[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Hunan Acad Forestry, Res Inst Bamboo & Wood, Changsha 410004, Peoples R China

年份：2023

卷号：253

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20234314954597);Scopus(收录号：2-s2.0-85174737584);WOS:【SCI-EXPANDED(收录号:WOS:001102060600001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2022YFD2200701) .

语种：英文

外文关键词：Peach gum; Polysaccharide adhesive; Wood fiber composites

摘要：As a natural polysaccharide, efficiently converting peach gum (PG) into practical materials remains a significant challenge due to its complex structure and high molecular weight. This study developed a polysaccharide adhesive using PG as the primary raw material and citric acid (CA) as a cross-linking agent to produce a fully biobased wood fiber composite. The chemical compositions of PG and the synthesis process of PG-CA/55-45 adhesive were mainly discussed. The properties of the composites were explained through a microscopic perspective. The gel permeation chromatography (GPC) analysis revealed that the mean molecular weights of PG and PG-CA/55-45 adhesive were 9.07 x 106 Da and 9.98 x 104 Da, respectively. CA was introduced to depolymerize PG and cross-linked the degraded PG to form macromolecules with higher strength by the esterification reaction. PG-CA/55-45 adhesive demonstrated good mildew resistance and thermal stability. In addition, the composites exhibited excellent mechanical properties and water resistance. This study provided a simple and feasible approach to developing a polysaccharide adhesive for producing higher strength wood fiber composites, which can propose a new strategy for realizing the high-value utilization of PG.