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Mechanical properties of slide-ring materials for dielectric elastomer actuators
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Paper Abstract

Slide-ring materials (SRM) are novel polymeric elastomers which are prepared from necklace-like supramolecule, polyrotaxane, consisting of ring molecules and axial polymer. By cross-linking rings of polyrotaxanes, axial polymer chains are connected via ring molecules which can slide on polymer chains. The slidability of the cross-linking points leads to softness and deformability of SRMs. In this work, we investigate the unique mechanical properties of SRMs to apply them to dielectric elastomer actuators (DEAs). From dynamic viscoelasticity measurements, we have found that SRMs exhibit entropic elasticity and low elastic modulus. The stress strain relation of SRMs under uniaxial deformation follows ideal rubber elasticity model in a wide strain range, suggesting homogeneous and reversible network deformation caused by the sliding of cross-linking points in SRMs. The ideal rubber elasticity of SRMs results in their softness and low hysteresis under large deformation, which are advantages for the application as dielectric elastomer actuators.

Paper Details

Date Published: 13 March 2019
PDF: 6 pages
Proc. SPIE 10966, Electroactive Polymer Actuators and Devices (EAPAD) XXI, 1096619 (13 March 2019); doi: 10.1117/12.2513886
Show Author Affiliations
K. Mayumi, The Univ. of Tokyo (Japan)
C. Liu, The Univ. of Tokyo (Japan)
Takanori Nakai, Toyoda Gosei Co., Ltd. (Japan)
Makoto Ishida, Toyoda Gosei Co., Ltd. (Japan)
Hiromitsu Takeuchi, Toyoda Gosei Co., Ltd. (Japan)
Katsunari Inoue, Advanced Softmaterials Inc. (Japan)
Kenji Urayama, Kyoto Institute of Technology (Japan)
Hideaki Yokoyama, The Univ. of Tokyo (Japan)
Kohzo Ito, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 10966:
Electroactive Polymer Actuators and Devices (EAPAD) XXI
Yoseph Bar-Cohen, Editor(s)

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