Polymer dispersed liquid crystals for large area switchable windows: Effect of liquid crystal loading

被引:1
作者
Nicoletta, FP [1 ]
Caporusso, M
Hakemi, HA
Chidichimo, G
机构
[1] Univ Calabria, Dipartmento Chim, I-87036 Rende, Italy
[2] Snia Ric, I-75010 Pisticci Scalo, Italy
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 336卷
关键词
PDLC; phase separation; liquid crystals; polymer films;
D O I
10.1080/10587259908026022
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Polymer dispersed liquid crystals are composite materials which have been proposed in the last years as large area electrically switchable windows. Their electro-optical performance is strictly related to the morphology of liquid crystal droplets. We have investigated the morphological and electro-optical properties of droplets of nematic liquid crystals dispersed in NOA65 polymer matrix. We found that droplets size and dispersion become larger and larger as the liquid crystal loading is increased. At higher concentrations of liquid crystal two different distribution of droplet size are recognised. Switching fields and haze in the ON state show a minimum value when the liquid polymer/crystal weight ratio is around 55:45 for which the best performance is achieved.
引用
收藏
页码:83 / 91
页数:9
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