高压下液晶诱导聚合物伸直链晶体生成的研究  

STUDY ON THE FORMATION OF EXTENDED-CHAIN CRYSTAL INDUCED BY LIQUID CRYSTAL POLYMER UNDER HIGH PRESSURE

作　　者：吕军[1] 袁绍彦[1] 黄锐[1] 沈经纬[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《高分子材料科学与工程》2004年第4期50-54,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(294340101;59473002)

摘　　要：聚合物伸直链晶体一直是人们期望获得高强度、高模量材料中最引人注目的晶体结构,以往高压结晶获得聚合物伸直链晶体通常需要较高压力和温度的苛刻条件。本研究以液晶诱导制备含伸直链晶体的聚乙烯(PE)、聚酰胺(PA)及聚对苯二甲酸乙二醇酯(PET)等聚合物,使伸直链晶体的生成条件大幅度缓和。高压下液晶诱导生成聚合物伸直链晶体尝试成功,为其研究开辟了新的领域,同时也为聚合物伸直链晶体的工业化和实用化提供了新的途径和可能。文中同时介绍了液晶诱导聚合物伸直链晶体生成的两种机理,并提出了进一步研究的方向。ECC is a kind of crystal with high strength and high modulus. Usually the formation of ECC requires such conditions as high pressure and high temperature. The conditions for the formation of ECC were improved by addition of TLCP to PE, PA and PET. This suggests that it may be possible to obtain ECC by molding these polymers at general injection conditions. The mechanisms about the formation of ECC induced by TLCP were also introduced. Further study on the formation of ECC after addition of TLCP will be made.

关 键 词：聚合物 高压结晶 伸直链晶体 液晶诱导 

分 类 号：O782.9[理学—晶体学]