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功能高分子学报:2011,24(1):-
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聚合物分散液晶PMMA-5CB的制备及电光性能
(1.陕西师范大学化学与材料科学学院,西安 710062;2.西安工业大学材料与化工学院,西安 710032;3.西安工业大学材料与化工学院,西安 710032;4.陕西师范大学物理与信息技术学院,西安 710062)
Preparation and Electro Optical Properties of PMMA-5CB Polymer Dispersed Liquid Crystal
(1.College of Chemistry and Material Science, Shaanxi Normal University, Xi’an 710062, China;2.School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710032, China;3.School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710032, China;4.College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China)
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中文摘要: 以聚合引发相分离的方法制备了聚甲基丙烯酸甲酯(PMMA)基聚合物分散液晶(PDLC)。通过差示量热扫描仪(DSC)、偏光显微镜(POM)对不同液晶5CB(4-氰基-4′-戊基联苯)含量的PDLC热力学行为和液晶分散状态进行了表征。在电压为0~30 V、波长为633 nm处,用紫外可见分光光度计(UV-Vis)对PDLC的电光性能进行了研究。结果表明当w(5CB)达到20%以上时,PDLC发生相分离现象;当w(5CB)=30%时,液晶的分散状态最佳,电光效应最强。
Abstract:Poly(methyl methacrylate) based polymer dispersed liquid crystal (PDLC) materials were prepared by the method of polymerization induced phase separation (PIPS). The phase separation and disper sed states of the PDLC with different 5CB contents were characterized by DSC and POM. The electro optical properties of the samples were investigated using UV-Vis spectroscopy at 633 nm, 0~30 V. Results showed that when the mass fraction of liquid crystal 5CB was 30% in PDLC, the dispersed states of liquid crystal were well proportioned, and the variation of transmittance reached the highest value.
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牛小玲,刘卫国,刘鹏.聚合物分散液晶PMMA-5CB的制备及电光性能[J].功能高分子学报,2011,24(1):.
NIU Xiao-ling,LIU Wei-guo,LIU Peng.Preparation and Electro Optical Properties of PMMA-5CB Polymer Dispersed Liquid Crystal[J].Journal of Functional Polymers,2011,24(1):.