Bending control of Nafion-based electroactive polymer actuator coated with multi-walled carbon nanotubes |
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| Authors: | Hirohisa TamagawaAuthor Vitae Wenyi LinAuthor VitaeKeiko KikuchiAuthor Vitae Minoru SasakiAuthor Vitae |
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| Affiliation: | a Department of Human and Information Systems, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan
b Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza aoba, Aoba-ku Sendai 980-8579, Japan |
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| Abstract: | Electrical bending control of Nafion-based ionic polymer-metal composite (IPMC) is quite difficult. Unlike a conventional fully hydrated noble metal-coated Nafion type IPMC, however, highly dehydrated silver-coated Nafion type IPMC exhibited better electrical bending controllability. Embedding of the multi-walled carbon nanotube (MWCNT) into Nafion surface promoted adsorption of a larger quantity of silver on the Nafion surface, since the MWCNT surface served as adsorption sites for silver. A MWCNT-embedded Nafion coated with such a large quantity of silver (SCNT-Naf) exhibited large bending curvature under an applied voltage when in a highly dehydrated state, because of large scale induction of silver redox reaction. We could even achieve autonomous bending curvature control of the highly dehydrated SCNT-Naf quantitatively by automatically monitoring total charge imposed on it. |
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| Keywords: | Nafion Actuator IPMC Bending MWCNT |
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