摘要
合成了两种含聚酯液晶基元的液晶聚氨酯 ,研究了反应时间、不同原料对产物结构的影响 ,利用红外光谱 (IR)、偏光显微镜 (POM)、差示扫描量热分析仪 (DSC)等手段确认其结构 ,正交偏光场观察证实 ,该液晶聚氨酯在一定温度范围内为热致性向列型液晶。
Two novel liquid crystal polyurethane prepolymers(LCPU) involving a polyester mesophase unit were synthesized. The effect of reactive condition on the structure of product was studied. The LCPU was characterized by FTIR,DSC and POM. The observation of POM showed that the liquid crystal polyurethane was a thermotropic nematic liquid crystalline polymer at certain temperature range.
出处
《聚氨酯工业》
2001年第3期13-16,共4页
Polyurethane Industry
基金
湖南省教委项目 ( 99C10 9)资助
关键词
热致性液晶
液晶
聚氨酯
聚酯
合成
thermotropic liquid crystalline
liquid crystal
polyurethane
polyester
