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Mechanical modification of bacterial cellulose hydrogel under biaxial cyclic tension

journal contribution
posted on 16.12.2019, 10:56 by Xing Gao, Emrah Sozumert, Zhijun Shi, Guang Yang, Vadim Silberschmidt
This study presents a novel and simple method to modify the microstructure of bacterial cellulose (BC) hydrogel. BC specimens were produced using Gluconacetobacterxylinus ATCC 53582, then cut into cross-shape specimens and subjected to biaxial cyclic tension in a displacement-control mode. Microstructural changes in the tested specimens were recorded during a biaxial deformation process. The effect of biaxial load on microstructure of BC hydrogel was investigated to understand deformation and fracture mechanisms of a BC fibrous network. The obtained knowledge reveals the fundamental principles of microstructural modifications, which could enhance biological performance of such hydrogels. The mechanically re-constructed BC specimens demonstrated a relatively homogeneous micro-porous structure with an average pore size of 100 μm.

Funding

7th European Community Framework Programme for financial support through a Marie Curie International Research Staff Exchange Scheme (IRSES) Project entitled “Micro-Multi-Material Manufacture to Enable Multifunctional Miniaturised Devices (M6)” (Grant no. PIRSES-GA2010-269113).

European Union Programme Horizon 2020 under Grant Agreement no H2020-MSCA-RISE-2014- 644175 MATRIXASSAY

China-European Union technology cooperation programme (Grant no. 1110

National Natural Science Foundation of China (Grant no. U1713219)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Mechanics of Materials

Volume

142

Publisher

Elsevier BV

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Mechanics of Materials and the definitive published version is available at https://doi.org/10.1016/j.mechmat.2019.103272

Acceptance date

04/12/2019

Publication date

2019-12-07

Copyright date

2020

ISSN

0167-6636

Language

en

Depositor

Prof Vadim Silberschmidt Deposit date: 15 December 2019

Article number

103272

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