331 非イオン性高分子ゲルの電場による高速大変形 : 人工筋肉様柔軟駆動材料

概要

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Non-ionic polymer gel of poly(vinyl alcohol)(PVA) swollen with a dielectric solvent, dimethyl sulfoxide (DMSO) was found to be bent by applying an electric field. The gel was prepared by chemically crosslinking a physically crosslinked PVA gel. The gel has homogeneous structure. Bending at the field of 500 V/mm reached the bending angle of over 90° within 60 ms. The size of the gel was 10 (length)x5 (width)x2 (thickness) in mm. With increasing the field strength the bending curvature was proportional to the square of the electric field. The strain induced in the deformation was suggested over 100%. The gel also showed a crawling motion, when it was placed on an array of the electrodes fixed on a glass plate. The mechanism of the deformation was suggested to be explained by the charge injected solvent drag. Solvent drag induced the pressure distribution in the gel which leads the bending deformation. The nonionic gel and the method proposed can be a possible way for the practical artificial muscle.
社団法人日本機械学会の論文
2000-07-31