固体变温核磁共振碳谱研究主链型热致液晶聚醚聚氨酯弹性体  

SOLID - STATE HIGH - RESOLUTION VARIABLE -TEMPERATURE ￣(13)C NMR STUDY ON HEXAMETHYLENE DIISOCYANATE BASED MAIN- CHAIN LIQUID - CRYSTALLINE ELASTOMER

作　　者：陈群[1] 杨光[1] 王源身[1] 余学海[1] 黑子弘道 安藤勋 

机构地区：[1]华东师范大学分析测试中心,南京大学高分子系,日本东京工业大学高分子工学科

出　　处：《高分子学报》1996年第4期509-512,共4页Acta Polymerica Sinica

基　　金：国家教委留学归国人员科研资助费项目

摘　　要：固体变温核磁共振碳谱研究主链型热致液晶聚醚聚氨酯弹性体陈群，杨光，王源身（华东师范大学分析测试中心上海２０００６２）余学海（南京大学高分子系南京２１０００８）黑子弘道，安藤勋（日本东京工业大学高分子工学科）关键词主链型热致液晶聚氨酯弹性体，固体变温高...main-chain liquid crystalline polyurethane elastomer (LCPUE) based on biphenyl mesogenic diol(HB6), poly(tetramethylene oxide)(PTMO), and hexamethylene diisocyanate (HDI) was studied by solid-state high-resolution variable-temperature 13C NMR spectroscopy from room-temperature to 130℃. It was revealed that in the heating process, even when temperature exceeds the melting-point of the sample, there still. exist hard-segment micelles with ordered packing structure.The finding is applicable to explain the phenomenon that the liquid-crystalline phase does not appear in the heating process of LCPUE.

关 键 词：热致液晶 液晶 聚氨酯 弹性体 LCPuE NMR 

分 类 号：O633.4[理学—高分子化学] O753.2[理学—化学]