Actuation of Model Phalanges by Ion Polymer Metal Compound

Abstract:

We have fabricated a prototype model artificial muscle that drives model phalanges in water with ion polymer metal compound (IPMC) which generates relatively large displacement with fast response but generates relatively small force. We have developed IPMC of greater thickness of up to 600 µm than conventional Nafion 117 based IPMC of 200 µm which enabled to generate greater force. In fabricating IPMC Nafion R-1100 resin was heat-pressed at 185 °C with 20-30 MPa. The thickness of IPMC could be adjusted by changing the amount of resin, pressure, and time to heat-press. Fabricated IPMC was then cut in shapes and an electrode was attached on the surface of IPMC. The device was used as an artificial muscle type actuator which was fabricated in a shape that bridges two conjoining bones, and controls opening angle of the bones that mimics contraction and expansion motion of the muscle. Bipolar power supply and function generators were used to drive IPMC membranes attached to the model phalanges.

• Periodical: Advances in Science and Technology (Volume 79)
• Pages: 69-74
• DOI: https://doi.org/10.4028/www.scientific.net/AST.79.69
• Online since: September 2012
• Authors: Tadashi Ihara, Taro Nakamura, Kinji Asaka
• Keywords: Actuator, Artificial Muscles, Electro-Active Polymer, IPMC, Nafion, Sensor

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