期刊
CARBOHYDRATE POLYMERS
卷 208, 期 -, 页码 97-107出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.12.052
关键词
Cellulose; Nanoscale; Adhesion; Hemicellulose; Atomic force microscopy; Hydrogen bonding
资金
- UQ Postgraduate Research Scholarship
- Australian Research Council Discovery Project [DP180101919]
- Australian Research Council Centre of Excellence in Plant Cell Walls [CE110001007]
Inter-fibre adhesion is a key contributing factor to the mechanical response and functionality of cellulose-based biomaterials. 'Dip-and-Drag' lateral force atomic force microscopy technique is used here to evaluate the influence of arabinoxylan and xyloglucan on interactions between nanoscale cellulose fibres within a hydrated network of bacterial cellulose. A cohesive zone model of the detachment event between two nano-fibres is used to interpret the experimental data and evaluate inter-fibre adhesion energy. The presence of xyloglucan or arabinoxylan is found to increase the adhesive energy by a factor of 4.3 and 1.3, respectively, which is consistent with these two hemicellulose polysaccharides having different specificity of hydrogen bonding with cellulose. Importantly, xyloglucan's ability to strengthen adhesion between cellulose nano-fibres supports emergent models of the primary plant cell walls (Park & Cosgrove, 2012b), which suggest that xyloglucan chains confined within cellulose-cellulose junctions play a key role in cell wall's mechanical response.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据