含β-环糊精液晶聚合物的合成与性能  

Synthesis and Properties of Liquid Crystalline Polymers Containing β-Cyclodextrin Groups

作　　者：姚丹姝[1] 吕双[1] 钱璞[1] 张宝砚[1] 

机构地区：[1]东北大学理学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2010年第7期1007-1010,共4页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2006AA02Z291);辽宁省博士启动基金资助项目(20051014)

摘　　要：将修饰的β-环糊精衍生物单-(6-丙烯酰乙二氨基-6-去氧)-β-环糊精二十乙酸酯(M1)作为手性单体,4-十一烯酰氧基苯甲酰氧基-4’-乙氧基苯甲酰氧基对联苯酚双酯(M2)作为液晶单体,与聚甲基含氢硅氧烷接枝共聚,得到含β-环糊精基元的液晶聚合物P1～P7.通过FT-IR,1H NMR,DSC,POM,TGA,XRD,旋光分析等手段对所获单体及聚合物的结构、相行为等性能进行了表征与测试.结果表明,单体M1为非液晶手性单体,其比旋光度为+95.30,单体M2呈现向列相的丝状织构,聚合物P1～P7均有液晶性,它们的热稳定性良好,热失重5%时的温度均在300℃左右,随着手性单体M1含量的增加,聚合物的液晶区间变窄,比旋光度值增加.With the chiral monomer mono-（ 6-acryl ethylenediamino-6-deoxy）-β-cyclodextrin twenty acetate（M1） and liquid crystal monomer 4- [ （p-undecylen-l-yloxy） benzoyloxy] -4＇ - （ p-ethoxy ） benzoyloxy biphenyl ester （ M2 ） both grafted onto the backbone of polymethylhydrosiloxane, a new kind of liquid crystalline polymers P1-P7 containing β-cyclodextrin was prepared. Their structures and properties were characterized with FT-IR, 1HNMR, DSC, POM, TG, X-ray and SROT. The results showed that M1 is a chiral nonmesogenic monomer whose optical rotation is ＋ 95.30 and M2 presents a threaded texture of the nematic phase, while P1- P7 are thermotropic liquid crystalline polymers with high thermal stability and 5 % heat loss about 300 ℃. With increasing MI content in the polymers, the liquid crystal phase is shortened and specific opticity is increased.

关 键 词：Β-环糊精 液晶 单体 聚合物 合成 

分 类 号：O631.1[理学—高分子化学]