Thermal phase transition behaviour of liquid crystals in submicron pores formed with stretched polymer fibrils

Hideo Fujikake, Masashi Kuboki, Takeshi Murashige, Hiroto Sato, Hiroshi Kikuchi, Taiichiro Kurita, Fumio Sato

研究成果: Article査読

2 被引用数 (Scopus)

抄録

This paper discusses thermal phase transitions in a nematic liquid crystal material, filling a highly strained porous polyolefin film. Ruptured and aligned polymer fibrils, whose minimum diameter reaches several tens of nm, formed polymer networks in the porous film. From observations of temperature-controlled composite films using a polarizing microscope, it was noted that the isotropic-to-nematic phase transition temperatures of submicron liquid crystal domains, located in or near molecularly aligned streak-like polymer areas, were significantly higher than those located at some distance from these areas. It was assumed that the highly aligned polymer chains in the fine fibrils promote the nematic phase of the liquid crystal. The stretched porous polymer, exhibiting spatial ordering on a submicron scale, is thus suitable for the control of thermal phase transitions in a liquid crystal.

本文言語English
ページ(範囲)989-992
ページ数4
ジャーナルLiquid Crystals
31
7
DOI
出版ステータスPublished - 2004 7 1
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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