末端接液晶基元的超支化聚酯液晶的合成及表征  

Synthesis and Characterization of One Hyperbranched Polyester Liquid Crystal of End-On Mesogens

作　　者：岳俊秋[1] 曹元[1] 杜宇[1] 王跃川[1] 

机构地区：[1]高分子材料与工程国家重点实验室四川大学高分子学院,四川成都610065

出　　处：《高分子材料科学与工程》2006年第4期56-59,共4页Polymer Materials Science & Engineering

基　　金：国家教育部博士点基金资助项目(B120030610061)

摘　　要：用对羟基联苯氰与氯乙醇反应制备的液晶基元,尾接到超支化聚酯的外围末端,合成了一种新型的超支化聚合物液晶。并对其进行FT-IR1、H-NM R、DSC、POM、W AXD等表征,证明了其为向列型液晶。A hyperbranched polyester liquid crystal of end-on mesogens based on the hyperbranched polyester and mesogenic units was prepared. The end functional groups of the hyperbranched polyester were all carboxy. The mesogenic units were synthesized by 4-Hydroxy-4- Cyanobiphenyl and 2-Chloroethanol. The mesogenic units and hyperbranched polyester liquid crystal were characterized by FT-IR and ^1H-NMR. The liquid crystal properties were studied by DSC, POM and WAXD. The experimental results indicate that the hyperbranched polyester liquid crystal shows nematic phase from 10 ℃ to 300 ℃.

关 键 词：超支化聚酯 液晶 向列 

分 类 号：O631.1[理学—高分子化学]