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Preparation and electrooptical properties of liquid crystal dispersed film by electron‐beam irradiation
Author(s) -
Shindo Tadafumi,
Maeda Hiroki,
Ando Masayuki,
Uryu Toshiyuki
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970829)65:9<1675::aid-app4>3.0.co;2-c
Subject(s) - liquid crystal , materials science , monomer , polymerization , polymer , irradiation , polymer chemistry , chemical engineering , composite material , optoelectronics , physics , nuclear physics , engineering
Polymer films consisting of nematic liquid crystal (LC) droplets and polymer networks were prepared by using a low‐energy electron beam to irradiate a homogeneous mixture of nematic LC and bifunctional methacrylate monomer. Influences of such polymerization conditions as polymerization temperature, monomer concentration, and radiation energy on electrooptical properties of the compound films were examined. The polymer yield, affecting to a large extent the film properties, depended on the monomer concentration and the radiation energy. Compound films, which have a switching function from the scattering state to transparency by applying approximately 20–30 V between the two sides of the film, were obtained. In addition, it was found that a compound film with excellent electrooptical properties was prepared by changing impure LC in the droplets into pure LC. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:1675–1681, 1997