Tunable polymer actuators via a simple and versatile blending approach

Hee La Kwak, Kieyong Cho, Seunggun Yu, Kyung Youl Baek, Jong Chan Lee, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The physical and electromechanical properties of poly(vinylidenefluoride- co-trifluoroethylene) (P(VDF-TrFE))/poly(methylmethacrylate-b- dodecylmethacrylate-b-methylmethacrylate) (P(MMA-b-DDMA-b-MMA)) triblock copolymer blends were investigated. The P(VDF-TrFE)/P(MMA-b-DDMA-b-MMA) blend formed a well mixed and microphase-separated morphology in which the P(VDF-TrFE) was selectively miscible with the PMMA end blocks in the P(MMA-b-DDMA-b-MMA) triblock copolymer owing to the strong chemical affinity, not with the PDDMA middle block in the P(MMA-b-DDMA-b-MMA) block copolymer. The blends could manipulate the various nanostructures, such as hexagonal cylinder, lamellar, and micellar structures, according to the composition. The dielectric properties, tensile modulus, and electric actuation properties of the blends were easily tuned by simply changing the composition of the blend. It was found that the blend approach using a block copolymer serves as an easy and versatile way to fabricate the tunable polymer actuators.

Original languageEnglish
Pages (from-to)547-554
Number of pages8
JournalSensors and Actuators, B: Chemical
Publication statusPublished - 2012 Nov
Externally publishedYes


  • Actuator
  • Block copolymer
  • Dielectric
  • P(VDF-TrFE)
  • Polymer blend

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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