摘要
以甲基丙烯酸甲酯及小分子液晶为原料,采用光引发聚合诱导相分离法制备聚合物分散液晶(PDLC)薄膜,并详细研究了影响其电光性能的因素。研究发现,在相同实验条件下,液晶微滴粒径随着液晶含量的增加而增大;随着引发剂含量的增加,PDLC膜的阈值电压和记忆效应得到很大程度的改善。而甲基丙烯酸甲酯的预聚合的转化率对PDLC薄膜的电光性能影响不明显。实验制得的PDLC膜能实现较好的电光响应。
Polymer dispersed liquid crystal （PDLC） films were prepared by polymerization-induced phase separation using the matrix of poly （methyl methacrylate） and the economical nematic liquid cryatal （LC） of E7. The techniques to prepare the PDLC films were introduced, and the factors of influencing PDLC film＇s electro-optical properties were also discussed. It is found that the size of LC droplets increases with the proportion of LC; and as the concentration of the photoinitiator increases, the threshold voltage and memory effect of the PDLC films decrease; the conversion of the prepolymerization of MMA does not influence the electro-optical properties of the PDLC films. The optimum parameters were ascertained and the PDLC films prepared on the condition can show good electrooptical properties.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第1期5-7,11,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50773045)
四川大学科技创新基金(2005CF09)
关键词
聚合物分散液晶
相分离
电光性质
polymer dispersed liquid crystal
phase separation
electro-optical properties
