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Title: Assessing stiffness of nanofibres in bacterial cellulose hydrogels: Numerical-experimental framework
Authors: Gao, Xing
Sozumert, Emrah
Shi, Zhijun
Yang, Guang
Silberschmidt, Vadim V.
Keywords: Stiffness
Bacterial cellulose
Issue Date: 2017
Publisher: © Elsevier
Citation: GAO, X. ... et al, 2017. Assessing stiffness of nanofibres in bacterial cellulose hydrogels: Numerical-experimental framework. Materials Science and Engineering C, 77, pp. 9-18.
Abstract: This work presents a numerical-experimental framework for assessment of stiffness of nanofibres in a fibrous hydrogel – bacterial cellulose (BC) hydrogel – based on a combination of in-aqua mechanical testing, microstructural analysis and finite-element (FE) modelling. Fibrous hydrogels attracted growing interest as potential replacements to some tissues. To assess their applicability, a comprehensive understanding of their mechanical response under relevant conditions is desirable; a lack of such knowledge is mainly due to changes at microscale caused by deformation that are hard to evaluate in-situ because of the dimensions of nanofibres and aqueous environment. So, discontinuous FE simulations could provide a feasible solution; thus, properties of nanofibres could be characterised with a good accuracy. An alternative – direct tests with commercial testing systems – is cumbersome at best. Hence, in this work, a numerical-experimental framework with advantages of convenience and relative easiness in implementation is suggested to determine the stiffness of BC nanofibres. The obtained magnitudes of 53.7–64.9 GPa were assessed by calibrating modelling results with the original experimental data.
Description: This paper was published in the journal Materials Science and Engineering C and the definitive published version is available at http://dx.doi.org/10.1016/j.msec.2017.03.231.
Sponsor: The authors would like to acknowledge the 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-GA-2010-269113). Additional support from China-European Union Technology Cooperation Programme (Grant No. 1110) is also acknowledged.
Version: Accepted for publication
DOI: 10.1016/j.msec.2017.03.231
URI: https://dspace.lboro.ac.uk/2134/25611
Publisher Link: http://dx.doi.org/10.1016/j.msec.2017.03.231
ISSN: 0928-4931
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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