PHASE STRUCTURE AND THERMAL BEHAVIOR OF LIQUID CRYSTALLINE MULTI-BLOCK COPOLYMERS,POLY[1,6-BIS(4-OXYBENZOYL-OXY)HEXANE TEREPHTHALATE]-b-BISPHENOL A POLYCARBONATE |
| |
Authors: | Hui-qing Zhang Xiong-yan Zhao De-shan Liu Oi-xiang Zhou |
| |
Institution: | Department of Chemical Engineering Tsinghua University; Beijing 100084; China |
| |
Abstract: | Liquid crystalline multi-block copolymers poly 1,6-bis(4-oxybenzoyl-oxy)hexane terephthalate]-b-bisphenol A polycarbonate (PHTH-6-b-PC) with different segments of polycarbonate (PC) and thermotropicpolyester PHTH-6 were synthesized in tetrachloroethane at 144~146℃, The influence of segment length onthe resulting phase structure and thermal behavior of block copolymers was also discussed. It is demonstratedby TEM and DMA that the resulting block copolymers show a considerable microphase separation. The degree of phase separation and the thermal behavior of the block copolymers are strongly dependent on the molecular weight of the segments incorporated. |
| |
Keywords: | Liquid crystalline multi-block copolymer Phase structure Thermal behavior |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
| 点击此处可从《高分子科学》下载免费的PDF全文 |