单体结构对聚合物稳定胆甾相液晶形貌及光电性能的影响  

Effects of Monomer Structures on Morphology and Electro-Optic Property of Polymer-Stabilized Cholesteric Texture

作　　者：宋志刚[1,2] 张俊[1,2] 陆红波[1] 王洁然 丁运生 

机构地区：[1]合肥工业大学特种显示技术教育部重点实验室,特种显示技术国家工程实验室,现代显示技术省部共建国家重点实验室培育基地,合肥230009 [2]合肥工业大学仪器科学与光电工程学院,合肥230009 [3]安徽华能电缆集团有限公司,安徽无为238371

出　　处：《功能高分子学报》2014年第2期172-177,共6页Journal of Functional Polymers

基　　金：国家自然科学基金(61107014);国家高技术研究发展计划(863)(2012AA011901);科技部“973”计划前期研究专项(2012CB723406)

摘　　要：采用紫外光聚合诱导相分离法制备聚合物稳定胆甾相液晶(PSCT),研究了单体4,4′-二[6-(丙烯酰氧基)己氧基]联苯(BAB6)、2-甲基-1,4-二[4-(3-丙烯酰氧基已氧基)苯甲酸基]对苯二酚(HCM-009)、2-甲基-1,4-二[4-(3-丙烯酰氧基丙氧基)苯甲酸基]对苯二酚(LCM)对常黑和常白模式PSCT光电性能的影响。结果表明:BAB6不具备液晶性,与液晶的相容性差,形成的聚合物网络疏松,网孔较大;HCM-009和LCM均具有液晶性,能很好地溶于液晶中。BAB6、HCM-009、LCM 3种单体形成的聚合物网络对液晶分子的锚定作用依次增强,常黑模式PSCT的闲值(饱和)电压减小,下降时间变长,迟滞宽度变大;而常白模式PSCT的驱动电压增大,响应速率变快。Polymer-stabilized cholesteric texture （PSCT） films were prepared by means of polymerization induced phase separation. The influence of different monomers, including 4,4′-bis[6-（acryloyloxy）-hexyloxy]biphenyl（BAB6）, 1,4-di-[4-（3-acryloyloxyhexyloxy） benzoyloxy]-2-methyl benzene （HCM-009） and 1,4-di-[4-（3-acryloyloxypropoxy） benzoyloxy]-2-methyl benzene （LCM）, on the electro-optic property of normal-mode and reverse-mode PSCT films was investigated. It was indicated that the monomer of BAB6 has poor solubility in liqiud crystals due to the absence of liquid crystal phase. The polymer network formed by BAB6 is loose and the averaged void size is large. While for the monomers of HCM-009 and LCM, liquid crystal phases were observed resulting in good solubility. As anchoring effect of polymer networks formed by BAB6, HCM-009 and LCM increased grandually, smaller threshold （saturated） voltage, longer decay time and larger hysteresis width were observed for normal-mode PSCT. Whereas for reverse-mode PSCT, higher driving voltage and faster response time were found.

关 键 词：聚合物稳定胆甾相液晶 光电性能 聚合物网络形貌 单体结构 

分 类 号：O753.2[理学—晶体学]