Effects of functionality of thiol monomer on electro-optical properties of polymer-dispersed liquid crystal films
Effects of functionality of thiol monomer on electro-optical properties of polymer-dispersed liquid crystal films
复制标题
硫醇单体官能度对聚合物分散液晶薄膜电光性能的影响
DOI：
10.1080/02678292.2016.1262069
复制
发表时间：
2017-01-01
期刊：
影响因子：
2.2
通讯作者：
Yang, Huai
中科院分区：
文献类型：
--
作者：
Sun, Yujian;Zhang, Cuihong;Yang, Huai
本文首次采用紫外光引发聚合法制备了以丙烯酸酯和硫醇为单体的聚合物分散液晶（PDLC）薄膜。系统地研究了PDLC薄膜的电光性能和形貌。由于硫醇-丙烯酸酯反应与丙烯酸酯单体聚合反应之间存在竞争，硫醇单体的官能度及其投料比对制备的PDLC膜的性能有很大影响。这使得聚合物网络和PDLC膜的电光性能容易通过引入硫醇单体来调节。在PDLC体系中加入适当浓度的四官能团硫醇单体PETMP，可获得较低的驱动电压和较高的对比度。图形摘要
ABSTRACT In this paper, polymer-dispersed liquid crystal (PDLC) films which based on the acrylate and the thiol monomers were first prepared by ultraviolet-initiated polymerisation. The electro-optical properties and morphologies of the PDLC films were systematically investigated. The functionality of thiol monomers and their feed ratio showed great influence on the properties of the fabricated PDLC films because of the existence of competition between thiol–acrylate reaction and acrylate monomer polymerisation reaction. This made the polymer network and electro-optical properties of the PDLC films easily tunable by the introduction of the thiol monomers. When added four-functional thiol monomer PETMP with appropriate concentration into the PDLC system, lower driven voltage and higher contrast ratio were achieved. Graphical Abstract