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9 April 2010 Conductive filler morphology effect on performance of ionic polymer conductive network composite actuators
Sheng Liu; Yang Liu; Hulya Cebeci; Roberto Guzman de Villoria; Jun-Hong Lin; Brian L. Wardle; Qiming Zhang
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Proceedings Volume 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010; 764219 (2010) https://doi.org/10.1117/12.847619
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States
Abstract
Several generations of ionic polymer metal composite (IPMC) actuators have been developed since 1992. It has been discovered that the composite electrodes which are composed of electronic and ionic conductors, have great impact on performance of ionic polymer actuators by affecting strain level, efficiency and speed. One of important factors in composite electrodes is the shape and morphology of electronic conductor fillers. In this paper, RuO2 nanoparticles and vertically aligned carbon nanotube (Va-CNT) are used as conductor fillers. Making use of unique properties of Va-CNT forests with ultrahigh volume fraction in Nafion nanocomposite, an ionic polymer actuator is developed. Ion transport speed is greatly increased along CNT alignment direction. The high elastic anisotropy, arising from the high modulus and volume fraction of Va-CNTs, enhances actuation strain while reducing the undesirable direction strain. More than 8% actuation strain under 4 volts with less than one second response time has been achieved.
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Sheng Liu, Yang Liu, Hulya Cebeci, Roberto Guzman de Villoria, Jun-Hong Lin, Brian L. Wardle, and Qiming Zhang "Conductive filler morphology effect on performance of ionic polymer conductive network composite actuators", Proc. SPIE 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010, 764219 (9 April 2010); https://doi.org/10.1117/12.847619
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