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Proceedings Paper

Characterization of electroelastomers based on interpenetrating polymer networks
Author(s): Soon Mok Ha; Michael Wissler; Ron Pelrine; Scott Stanford; Gabor M. Kovacs; Qibing Pei
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Paper Abstract

Interpenetrating polymer networks (IPN) in which one elastomer network is under high tension balanced by compression of the second network have been shown to exhibit electrically-induced strain up to 300% and promise a number of polymer actuators with substantially enhanced performance and stability. This paper describes the mechanical and thermal properties of the IPN electroelastomer films. The quasi-linear viscoelastic model and Yeoh strain energy potential are used to characterize the viscoelastic response and stress-strain behavior of the IPN films in comparison with 3M VHB films, primary component network in the IPN films. Material parameters were determined from uniaxial stress relaxation experiments. An analysis of the results confirms that the IPN composites have reduced viscoelasticity and fast stress-strain response due to preserved prestrain. Differential scanning calorimetry showed two glass transition temperatures that are slightly shifted from the two component networks, respectively. The two networks in the IPN are considered to be independent of each other. The thermal property is also studied with termogravimetric analysis (TG).

Paper Details

Date Published: 4 April 2007
PDF: 10 pages
Proc. SPIE 6524, Electroactive Polymer Actuators and Devices (EAPAD) 2007, 652408 (4 April 2007);
Show Author Affiliations
Soon Mok Ha, Univ. of California/Los Angeles (United States)
Michael Wissler, Empa (Switzerland)
Ron Pelrine, SRI International (United States)
Scott Stanford, SRI International (United States)
Gabor M. Kovacs, Empa (Switzerland)
Qibing Pei, Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 6524:
Electroactive Polymer Actuators and Devices (EAPAD) 2007
Yoseph Bar-Cohen, Editor(s)

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