剪切场下聚合物结晶形态学研究进展  

PROGRESS OF CRYSTALLIZATION MORPHOLOGY OF POLYMER MELT IN SHEAR FIELD

作　　者：毛益民[1] 杨其[1] 李光宪[1] 黄亚江[1] 

机构地区：[1]四川大学高分子材料科学与工程学院 高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2004年第1期36-39,44,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(59673023);国家自然科学基金重点资助项目(29934070)

摘　　要：聚合物熔体被引入剪切场后,会发生与静态下不同的结晶现象。微观上可以得到伸直链晶体、片晶及串晶;宏观上除了静态下典型的球晶外,还能观察到球晶的变形和柱晶等。另外,剪切还可以使晶体发生晶型转变。本文对聚合物熔体在剪切场下结晶形态学的研究进展进行了介绍。Shear have for a long time been thought as a weak flow and cannot cause structure change of polymer melt. But larger amount of experimental facts show that polymer melts have a different morphology as it be introduced into shear field. Extended chain crystalline, lamellae and shish-kabeb structure will be observed in microscopic field; while from macroscopic angle, spherulite, deformed spherulite, cylindrite and so on will be observed. And, shear also has influence on crystal form of polymer crystalline. In this paper, the progress of polymer melt crystallization morphology will be described.

关 键 词：剪切场 聚合物 结晶形态学 伸直链晶体 片晶 串晶 

分 类 号：O631.13[理学—高分子化学]