Thermal annealing effects on the physical properties of styrenic pentablock ionomers and their electromechanical responses

Jang Woo Lee, Jin Hong Lee, Minho Kim, Soon Man Hong, Chong Min Koo

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6 Citations (Scopus)


Thermal annealing effect on the physical properties of two ionic (poly((t-butyl-styrene)-b-(ethylener -propylene)-b-(styrene-r -styrene sulfonate)-b-(ethylene-r -propylene)-b-(t-butyl-styrene))) (SSPB) pentablock copolymers with different ion exchange capacities (IEC; 1.5 and 2.0 meq/g) and their electromechanical responses in ionic polymer-metal composite (IPMC) devices have been investigated. The ionic SSPB formed the microphase-separated morphology on the several tens nanometer scale and the selectively sulfonated styrene middle blocks formed the ionic channels through which ions can pass in the membrane. The thermal annealing at a high temperature led to the well developed interconnectivity between adjacent ionic channels, and thus enhanced the ion conductivity and mechanical strength of membranes, resulting in an actuation enhancement of the SSPB-based ionic actuator.

Original languageEnglish
Pages (from-to)3606-3610
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number5
Publication statusPublished - 2013 May 1
Externally publishedYes



  • Actuator
  • Annealing effect
  • Ionic polymer-metal composites (IPMC)
  • Sulfonated styrenic pentablock copolymer

ASJC Scopus subject areas

  • Medicine(all)

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