中文摘要：

聚合物分散液晶膜（PDLC）是将液晶和聚合物混合得到的一种综合性能优异的膜材料。聚合物作为成膜材料，其固化过程是影响聚合物分散液晶膜电光特性的重要因素。实验采用原子转移自由基聚合法制备活性大分子引发剂，引发可聚合单体进行聚合，通过光引发聚合诱导相分离法制备PDLC膜。研究表明：采用该方法可以极大地改善PDLC的光电性能，并且通过改变固化时间可以调节PDLC的各项光电性能，随着固化时间的增加，PDLC阈值电压（Vth）、饱和电压（Vsat）都随之增加，膜关态透光率（TOFF）、开态透光率（TON）随之降低。

英文摘要：

Polymer dispersed liquid crystal （PDLC）, consisting of low molecular liquid crystal dispersed in a polymer matrix, is a kind of film-formation material with excellent electro-optical properties. In this paper, PDLC films were prepared by photo-polymerization induced phase separation （PIPS） which was initiated by macro-iniferter agent prepared by atom transfer radical polymerization. It was found that the macro-iniferter was an effective way to improve the electro-optical properties of PDLC films. In addition, the properties of PDLC could also be adjusted through the curing time. It is found that as the curing time increase, the contrast ratio and the driving voltages of the films increase, while the memory effect significantly decreases.