Focus on the electrical field-induced strain of electroactive polymers and the observed saturation

D. Guyomar, K. Yuse, P. J. Cottinet, M. Kanda, L. Lebrun

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Thanks to their large electrical field-induced strains, electroactive polymers can be used in various applications; as electroactive materials for artificial muscles or as active materials of membranes, due to their flexibility. One drawback concerning their use involves the saturation of the electrical field-induced strain which occurs at around 20% for a polymer film with a thickness of 80 μm. Few studies have been devoted to the understanding of this saturation. To this end, the present paper describes mechanical measurements of the extensive strain versus stress and the determination of the current flowing through an electroactive polymer driven by an electrical field. These experiments have clearly demonstrated that the observed saturation of the electrical induced strain was not due to a mechanical saturation within the sample but to the saturation of the electrically induced polarization. By carrying out a suitable modeling of the polarization versus electrical field, it was possible to calculate the strain and current versus electrical field. These values were then compared to experimental data, and were found to show a very good agreement.

本文言語English
論文番号114910
ジャーナルJournal of Applied Physics
108
11
DOI
出版ステータスPublished - 2010 12 1
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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