采用可逆加成-断裂链转移(RAFT)活性自由基聚合法制备了不同分子量的苯乙烯大分子引发剂(RAFT-PS),并通过紫外光聚合诱导相分离法制备聚合物分散液晶(PDLC)膜.研究了不同分子量的RAFT-PS对PDLC的微观形貌、光聚合动力学、液晶向列取向程度以及电光性能等方面的影响.研究表明,影响PDLC的微观形貌的关键因素是RAFT-PS的分子量,而不是聚合物基体分子量.通过调整RAFT-PS的分子量,能够有效控制液晶微滴粒径,进而改善PDLC的电光性能.
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