以紫外光聚合的聚氨酯丙烯酸酯(PUA)为基体, 通过紫外光聚合诱导相分离法制备了不同液晶含量、不同引发剂含量的聚合物分散液晶(PDLC)薄膜。使用改装的紫外分光光度计和超景深显微镜研究了不同液晶含量、不同引发剂含量对PDLC薄膜的电光性能和微观形貌的影响。研究表明, 随着液晶含量的增加, PUA基的PDLC的液晶微滴尺寸变大, 电光性能变好; 随着引发剂含量的增加, PUA基的PDLC液晶微滴变小, Ton增加。
关键词
Abstract
The reactive PUA was used as the matrices to prepare PDLC films with various liquid crystal contents and different concentrations of initiator by UV polymerization induced phase separation. The influence of concentrations of initiator and liquid crystal contents on the morphology and electro-optical property of PDLC films was studied through modified ultraviolet spectroscopy and digital microscope. It indicated that with the increase of the liquid crystal contents, the diameter of the liquid crystal droplets increased and the electro-optical property of PDLC films get better obviously and with the increase of the concentrations of initiator, the size of the liquid crystal droplets became smaller and Ton increased.
补充资料
中图分类号：TN27
DOI：10.3788/yjyxs20132806.0828
所属栏目：材料物理和化学
基金项目：国家自然科学基金(No.50973067, No.51173115);博士点基金(No.20110181110030)
收稿日期：2013-07-10
修改稿日期：2013-09-10
网络出版日期：--
作者单位 点击查看
马利鹏：四川大学 高分子材料工程国家重点实验室 高分子材料与工程学院,四川 成都610065
谢川：四川大学 高分子材料工程国家重点实验室 高分子材料与工程学院,四川 成都610065
马丽露丝：四川大学 高分子材料工程国家重点实验室 高分子材料与工程学院,四川 成都610065
汪映寒：四川大学 高分子材料工程国家重点实验室 高分子材料与工程学院,四川 成都610065
联系人作者：马利鹏(wangyinghun@vip.sina.com)
备注：马利鹏(1988-), 男, 陕西宝鸡人, 硕士研究生, 主要从事聚合物分散液晶的制备和研究。
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