摘要
合成了主链型联苯类及氧化偶氯苯类液晶聚硅氧烷聚氨酯弹性体，采用红外光谱，示差扫描量热，动态粘弹谱及带热台偏光显微镜等方法对聚合物进行了表征，讨论了它们的结构与性能．研究结果表明，这一系列多嵌段聚氨酯多数是向列型的液晶高分子聚合物。
wo series of mainchain liquid crystalline polysiloxane polyurethane elastomers(that is biphenyl type and azoxybenzene type) were synthesized. The structure and properties of these polymers were characterized by FT-IR, DSC, DMA and polarization microscope. Our study concluded that most of these polyurethane samples exhibited nematic thermotropic liquid crystal character. The liquid crystal properties had strong relations with the interaction between the hard and soft segments of the block polyurethane.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1996年第3期304-309,共6页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
液晶弹性体
聚氨酯
聚硅氧烷
相分离
主链型
Liquid crystalline elastomer, Block polyurethane, Phase separation,Nematic
