Enhancement of the electromechanical behavior of IPMCs based on chitosan/polyaniline ion exchange membranes fabricated by freeze-drying

Seon Jeong Kim, Min Sup Kim, Su Ryon Shin, In Young Kim, Sun I. Kim, Sang Hoon Lee, Tae Soo Lee, Geoffrey M. Spinks

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The electromechanical behavior of an ionic polymer-metal composite (IPMC) based on a chitosan/polyaniline (CP) interpenetrating polymer network (IPN) is influenced by the internal structure of the CP ion exchange membrane. The freeze-drying method was found to be successful in improving the IPMC electromechanical properties. Scanning electron microscopy (SEM) observations indicated that the ion exchange membranes became more porous after freeze-drying. From swelling ratio and differential scanning calorimetry (DSC) measurements, the freeze-dried membranes exhibited a higher swelling ratio and increased free water content. Electron beam deposition was used to manufacture the IPMC metal electrodes. Experiments on the bending of IPMC samples in a direct current electric field showed that the freeze-dried samples had a faster and larger bending motion than non-freeze-dried samples.

Original languageEnglish
Pages (from-to)889-894
Number of pages6
JournalSmart Materials and Structures
Volume14
Issue number5
DOIs
Publication statusPublished - 2005 Oct 1

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Enhancement of the electromechanical behavior of IPMCs based on chitosan/polyaniline ion exchange membranes fabricated by freeze-drying'. Together they form a unique fingerprint.

  • Cite this