交联剂对PDLC膜电-光性能的影响  

Effects of Crosslinking Agents on Electro-optical Performances of PDLC Films

作　　者：鹿岛美纪[1] 赵秀婷[1] 曹晖[1] 杨槐[1] 

机构地区：[1]北京科技大学材料科学与工程学院材料物理与化学系,北京100083

出　　处：《液晶与显示》2010年第4期531-533,共3页Chinese Journal of Liquid Crystals and Displays

基　　金：国家自然科学基金(No.20674005;No50973010);国家"863"计划平板显示重大专项(No.2008AA03A318);国家科技支撑计划(No.2007BAE31B00)

摘　　要：在PDLC薄膜中,聚合物网络网孔的大小直接影响着PDLC薄膜的电-光性能。该实验选用光可聚合单体/交联剂/液晶复合材料,经紫外光照射制备PDLC薄膜,研究了交联剂对PDLC薄膜电-光性能的影响。在混合物体系中引入长柔性链的PEGDA1000和短分子链的BDDA,影响了聚合物网络的微观形貌。交联剂分子链的长短对聚合物网络网孔的大小有明显的影响,进而影响了PDLC膜的电-光性能。The morphology of polymer dispersed liquid crystal （PDLC） has a major impact on its electro-optic properties. The PDLC was prepared by photochemical polymerization from UV-curable monomers/crosslinking agent/initiator/LC mixture. The influences of the chain length of crosslinking agents on the PDLC system have been studied. The microstructures of the PDLC were strongly influenced by the insertion of polyethylene glycol （1000） diacrylate （PEGDA 1000） crosslinker, relatively long and flexible branch, and 1,4-butanedioldiacrylate （BDDA） crosslinker along the network bone. The chain length of crosslinking agents have a significant effect on the LC domain size, and then influences the electro-optic properties of PDLC.

关 键 词：聚合物分散液晶 交联剂 聚合物网络 透过率 

分 类 号：O753.2[理学—晶体学]