Probing adhesion between nanoscale cellulose fibres using AFM lateral force spectroscopy: the effect of hemicelluloses on hydrogen bonding

Dolan, Grace K.; Cartwright, Ben; Bonilla, Mauricio R.; Gidley, Michael J.; Stokes, Jason R.; Yakubov, Gleb E.

Abstract

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.

Citation

Dolan, G. K., Cartwright, B., Bonilla, M. R., Gidley, M. J., Stokes, J. R., & Yakubov, G. E. (2019). Probing adhesion between nanoscale cellulose fibres using AFM lateral force spectroscopy: the effect of hemicelluloses on hydrogen bonding. Carbohydrate Polymers, 208, 97-107. https://doi.org/10.1016/j.carbpol.2018.12.052

• Journal Article Type: Article
• Acceptance Date: Dec 17, 2018
• Online Publication Date: Dec 18, 2018
• Publication Date: Mar 15, 2019
• Deposit Date: Feb 8, 2019
• Publicly Available Date: Dec 19, 2019
• Journal: Carbohydrate Polymers
• Electronic ISSN: 1879-1344
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 208
• Pages: 97-107
• DOI: https://doi.org/10.1016/j.carbpol.2018.12.052
• Keywords: Cellulose; Nanoscale; Adhesion; Hemicellulose; Atomic force microscopy; Hydrogen bonding
• Public URL: https://nottingham-repository.worktribe.com/output/1531897
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S014486171831498X
• Additional Information: This article is maintained by: Elsevier; Article Title: Probing adhesion between nanoscale cellulose fibres using AFM lateral force spectroscopy: The effect of hemicelluloses on hydrogen bonding; Journal Title: Carbohydrate Polymers; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.carbpol.2018.12.052; Content Type: article; Copyright: © 2018 Elsevier Ltd. All rights reserved.
• Contract Date: Feb 8, 2019