Reflective mode of HPDLC with various structures of polyurethane acrylates

被引：35

作者：

Park, MS

Kim, BK ^{[1
]}

Kim, JC

机构：

[1] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

[2] Pusan Natl Univ, Dept Elect Engn, Pusan 609735, South Korea

来源：

POLYMER | 2003年 / 44卷 / 05期

关键词：

HPDLC; polyurethane acrylate; reflection efficiency;

D O I：

10.1016/S0032-3861(03)00005-3

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Holographic polymer dispersed liquid crystals were prepared from photo-curable polyurethane acrylate of various structures and a nematic liquid crystal mixture upon curing the reactive diluents and hydroxy ethyl acrylate terminated (HEA) polyurethane prepolymers. The effects of prepolymer molecular structure were studied in terms of reflection efficiency, polymer volume shrinkage and electro-optic properties. Emphases have been made to improve the reflection efficiency and shrinkage of holographic grating during fabrications by modifying soft segment length and hard segment structures of the prepolymer. It was found that polyurethanes with short soft segment and flexible hard segment gave high reflection efficiency and volume shrinkage as well. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：1595 / 1602

页数：8

共 27 条

[1] Diffusion kinetics of formation of holographic polymer-dispersed liquid crystal display materials [J].