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

18 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
Externally publishedYes

Fingerprint

Ion exchange membranes
freeze drying
Chitosan
Polyaniline
Drying
Metals
membranes
Polymers
augmentation
polymers
composite materials
metals
Composite materials
ions
swelling
Swelling
Interpenetrating polymer networks
Water content
moisture content
Differential scanning calorimetry

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Enhancement of the electromechanical behavior of IPMCs based on chitosan/polyaniline ion exchange membranes fabricated by freeze-drying. / Kim, Seon Jeong; Kim, Min Sup; Shin, Su Ryon; Kim, In Young; Kim, Sun I.; Lee, Sang Hoon; Lee, Tae Soo; Spinks, Geoffrey M.

In: Smart Materials and Structures, Vol. 14, No. 5, 01.10.2005, p. 889-894.

Research output: Contribution to journalArticle

Kim, Seon Jeong ; Kim, Min Sup ; Shin, Su Ryon ; Kim, In Young ; Kim, Sun I. ; Lee, Sang Hoon ; Lee, Tae Soo ; Spinks, Geoffrey M. / Enhancement of the electromechanical behavior of IPMCs based on chitosan/polyaniline ion exchange membranes fabricated by freeze-drying. In: Smart Materials and Structures. 2005 ; Vol. 14, No. 5. pp. 889-894.
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