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Anisotropic Strain and Training of Conducting Polymer Artificial Muscles under High Tensile Stresses

Published online by Cambridge University Press:  31 January 2011

Keiichi Kaneto ,
Hikaru Hashimoto ,
Kazuo Tominaga ,
Tomokazu Sedai  and
Wataru Takashima
Keiichi Kaneto
Affiliation:
kaneto@life.kyutech.ac.jp, Kyushu Institute of Technology, Life Science and Systems Engineering, Kitakyushu, Japan
Hikaru Hashimoto
Affiliation:
hashimoto-hikaru@edu.life.kyutech.ac.jphikk5949@gmail.co.jp, Kyushu Institute of Technology, Life Science and Systems Engineering, Kitakyushu, Fukuoka, Japan
Kazuo Tominaga
Affiliation:
tominaga-kazuo@edu.life.kyutech.ac.jp, Kyushu Institute of Technology, Life Science and Systems Engineering, Kitakyushu, Fukuoka, Japan
Tomokazu Sedai
Affiliation:
seidai-tomokazu@edu.life.kyutech.ac.jp, Kyushu Institute of Technology, Life Science and Systems Engineering, Kitakyushu, Fukuoka, Japan
Wataru Takashima
Affiliation:
watakashi@lsse.kyutech.ac.jp, Kyushu Institute of Technology, Life Science and Systems Engineering, Kitakyushu, Fukuoka, Japan
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Abstract

Electrochemomechanical deformations (ECMD) of conducting polymer, polyaniline, films are studied to investigate the creeping and the memory effects. During electrochemical cycling under high tensile stresses up to 5 MPa, the films showed a remarkable creeping, resulting in the one dimensional anisotropic deformation. However, the creeping was recovered by release of the tensile stress, restoring from the anisotropic deformation. It was also found that the strain of ECMD after applying high tensile stresses increased compared with that before applying the large tensile stress. The result indicates that the artificial muscles are strengthened in strain by the experience of large tensile loads, and discussed taking the rheology of electrochemical cycles, viz., electrostatic crosslinking of polymer chains by oxidation and release of crosslinking by reduction.

Keywords

actuatorpolymermemory
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF11-10
Copyright
Copyright © Materials Research Society 2010

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References

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