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Issue 44, 2016
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Elastomers with tunable dielectric and electromechanical properties

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Abstract

Novel electroresponsive silicone elastomers modified with nitrile groups are presented, whose dielectric permittivity (ε′) is tuned from ε′ = 4.3 to ε′ = 17.4. They are prepared in a one-step process starting from a high molecular weight poly(methylvinylsiloxane) to which polar nitrile groups and cross-links are introduced in thin films. Different ratios of butanethiol/3-mercaptoproprionitrile are used to vary the amount of nitrile groups in these elastomers, while 2,2′-(ethylenedioxy)diethanethiol is used as a cross-linker. Because of the systematic nature of this investigation, we not only present promising elastic materials with remarkable dielectric, mechanical, and electromechanical properties but also provide a guideline for materials design aimed at dielectric elastomer actuator applications.

Graphical abstract: Elastomers with tunable dielectric and electromechanical properties

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Publication details

The article was received on 28 Apr 2016, accepted on 18 Oct 2016 and first published on 18 Oct 2016


Article type: Paper
DOI: 10.1039/C6TC01731B
Citation: J. Mater. Chem. C, 2016,4, 10545-10553
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    Elastomers with tunable dielectric and electromechanical properties

    S. J. Dünki, F. A. Nüesch and D. M. Opris, J. Mater. Chem. C, 2016, 4, 10545
    DOI: 10.1039/C6TC01731B

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