Bending control of Nafion-based electroactive polymer actuator coated with multi-walled carbon nanotubes

Hirohisa Tamagawa, Wenyi Lin, Keiko Kikuchi, Minoru Sasaki

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)375-382
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume156
Issue number1
DOIs
Publication statusPublished - 2011 Aug 10

Keywords

  • Actuator
  • Bending
  • IPMC
  • MWCNT
  • Nafion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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