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Issue 40, 2014
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Mechanical behavior of poly(methyl methacrylate)-based ionogels

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Abstract

Ionogels are formed when a cross-linked polymer network absorbs an ionic liquid. Ionogels are ionic conductors and, as such, are being considered for use in stretchable electronics and artificial muscles or nerves. The use of ionogels in these applications is limited in part by their mechanical behavior. Here we present an ionogel prepared by swelling covalently cross-linked poly(methyl methacrylate) in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide. The resulting ionogel is compliant, stretchable, and relatively tough. We demonstrate that the swelling ratio, elastic modulus, stretchability, and fracture energy of the ionogel depend sensitively on the cross-link density of the polymer network. The behavior of the ionogel is well captured by the model of the ideal elastomeric gel combined with the Flory–Huggins model for the energy of mixing.

Graphical abstract: Mechanical behavior of poly(methyl methacrylate)-based ionogels

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Supplementary files

Article information


Submitted
04 Jul 2014
Accepted
31 Jul 2014
First published
01 Aug 2014

Soft Matter, 2014,10, 7993-8000
Article type
Paper
Author version available

Mechanical behavior of poly(methyl methacrylate)-based ionogels

M. Li, J. Li, H. Na and J. J. Vlassak, Soft Matter, 2014, 10, 7993
DOI: 10.1039/C4SM01466A

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