EFFECT OF THE IONIC-CONDUCTIVITY OF A POLYMER MATRIX ON THE ELECTROOPTICAL PROPERTIES OF POLYMER-DISPERSED LIQUID-CRYSTAL FILMS

Authors
KIM JB LEE MG CHOI JH
Citation
Jb. Kim et al., EFFECT OF THE IONIC-CONDUCTIVITY OF A POLYMER MATRIX ON THE ELECTROOPTICAL PROPERTIES OF POLYMER-DISPERSED LIQUID-CRYSTAL FILMS, Polymer bulletin, 41(1), 1998, pp. 37-43
Citations number
8
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
41
Issue
1
Year of publication
1998
Pages
37 - 43
Database
ISI
SICI code
0170-0839(1998)41:1<37:EOTIOA>2.0.ZU;2-O
Abstract
The influence of ionic conductivity on the electrooptical response was investigated. A new monomer of 2-(poly(ethylene glycol)oxycarbonyl)-b icyclo[2.2.l]hepta-2,5-diene (PEGOC-BCHD) was synthesized and polymeri zed. Polymer/liquid crystal composite films are composed of poly(PEGOG -BCHD), E8, and alkali metal salts. The ionic conductivities were meas ured as a function of the ratio of LiClO4/ethylene oxide for various m olecular weights of poly(ethylene glycol). The results indicate that t he threshold field and response rise time can be reduced by increasing ionic conductivity of the matrix polymer. Liquid crystal droplets wer e observed in a continuous matrix phase in the form of 'Swiss cheese' morphology.