主链液晶聚硅(氧)烷的液晶行为  

Liquid crystalline behavior of main-chain polysilane and polysiloxane

作　　者：李新贵[1,2] 王琳[1,2] 

机构地区：[1]同济大学材料学院高分子材料系 [2]江西省环境监测中心站

出　　处：《合成橡胶工业》1998年第4期246-251,共6页China Synthetic Rubber Industry

摘　　要：综述了主链液晶聚硅烷和主链液晶聚硅氧烷（包括线型、环形和梯形结构）的热致和溶致液晶行为。指出主链液晶聚硅（氧）烷具有较稳定的热致液晶性能，其液晶相态温度范围最宽可达３７５℃，且多数在室温下即为柱状液晶相态。带有表面活性基团侧链的线型聚硅氧烷以水为溶剂时，可形成溶致液晶，其呈现液晶行为的临界浓度约为３０％。液晶聚硅（氧）烷所具有的液晶行为很可能使其成为一种新型的功能性硅橡胶。Thermotropic and lyotropic liquid crystallinity of main-chain polysilane and polysiloxane(including linear,ring and ladder structure )were reviewed with 19 references.It was suggested that main-chain polysilane and polysiloxane possessed stable thermotropic liquid crystallinity.The temperature range of liquid crystalline phase was high to 375 ℃,and most of them exhibited columnar liquid-crystalline phase.Linear polysiloxane with surface active group as side-chain in water showed lyotropic liquid crystallinity,and its critical concentration exhibiting liquid crystallinity was about 30%.The liquid crystallinity of the polysilane and polysiloxane might make them become a new type of silicone rubber.

关 键 词：液晶聚硅烷 液晶聚硅氧烷 液晶行为 硅橡胶 橡胶 

分 类 号：TQ333.93[化学工程—橡胶工业]