MISC

2004年8月

Morphological self-control of a phase-separated polymer during photopolymerization in a liquid-crystalline medium

POLYMER
  • H Kihara
  • ,
  • T Miura
  • ,
  • R Kishi
  • ,
  • A Kaito

45
18
開始ページ
6357
終了ページ
6363
記述言語
英語
掲載種別
DOI
10.1016/j.polymer.2004.07.013
出版者・発行元
ELSEVIER SCI LTD

An acrylate monomer having a cyanobiphenyl mesogen (1) was photopolymerized in a liquid-crystalline (LC) ordering field of 4-hexyloxybenzoic acid (2). A blend of (1) and (2) (molar ratio: 1:4), containing a photoinitiator, an inhibitor and a crosslinker, was irradiated with UV light at 120 and 137 degreesC in order to investigate the effect of an LC phase on the resulting polymer. Here, both temperatures are in the nematic temperature range of the blend, however, the former is in the LC temperature range of the polymer, whereas the latter is in the isotropic temperature range. Scanning electron microscopy of the obtained polymers revealed that the polymer prepared at 120 degreesC consisted of oriented fine fibers, measuring ca. 400 nm in diameter, while that obtained at 137 degreesC had a fused bead-like morphology. In addition, we investigated the effect of crosslinking on the morphology by comparing the results from the blends with and without a crosslinker. We found that the LC phase of the phase-separated polymer is one of the necessary conditions for the formation of the fine fiber structures. (C) 2004 Elsevier Ltd. All rights reserved.

Web of Science ® 被引用回数 : 10

リンク情報
DOI
https://doi.org/10.1016/j.polymer.2004.07.013
CiNii Articles
http://ci.nii.ac.jp/naid/80016836940
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000223562900028&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.polymer.2004.07.013
  • ISSN : 0032-3861
  • CiNii Articles ID : 80016836940
  • Web of Science ID : WOS:000223562900028

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