Phase separation of binary polymer mixtures under an electric field

Hironobu Hori, Osamu Urakawa, Okimichi Yano, Qui Tran-Cong-Miyata

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Time evolution of phase separation under an AC electric field was studied for poly(2-chlorostyrene)/poly(vinyl methyl ether) blends containing 0.5 wt % lithium perchlorate (LiClO4) near the critical point. We observed anisotropic morphologies with the interfaces aligned parallel to the direction of the field between two electrodes. The degree of anisotropy (D) was quantitatively evaluated by image analysis of the resulting morphology observed with an optical-phase contrast microscope. We found that D increased at the beginning of the phase separation and tended to reach an equilibrium state, while the characteristic length scale ξ of the morphology increased monotonically with time according to a power law ξ - tα.

Original languageEnglish
Pages (from-to)389-394
Number of pages6
JournalMacromolecules
Volume40
Issue number2
DOIs
Publication statusPublished - Jan 23 2007

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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