聚丙烯/高密度聚乙烯高取向共混物的附生结晶  

EPITAXIAL CRYSTALLIZATION IN HIGHLY ORIENTED FILMS OF IPP/HDPE BLEND

作　　者：张伟广[1] 杨德才[1] 

机构地区：[1]中国科学院长春应用化学研究所,高分子物理开放实验长春130022

出　　处：《高分子学报》1991年第3期378-380,共3页Acta Polymerica Sinica

基　　金：国家自然科学基金

摘　　要：最近,聚合物之间的附生结晶引起人们的极大兴趣和关注。附生结晶是一种结晶物质在另一种结晶物质上的取向生长,二者之间有特殊的作用。这种附生作用对结晶聚合物共混体系的形态结构和性能有极为重要的影响。本工作以电子显微镜方法研究熔体拉伸直接导致等规聚丙烯(iPP)和高密度聚乙烯(HDPE)共混物附生结晶。The epitaxial crystallization of highly oriented films of IPP/HDPE blends has been studied in this work by means of trasmission electron microsscopy. When the content of HDPE in the iPP/HDPE blends is below 30%, epitaxial growth of HDPE lamellae on highly oriented IPP lamellae has been observed. The intercrossing angle of the two kinds of epitaxial lamellae is about ±45°,while the contact planes should be (010) of IPP and (100) of HDPE. There is no above relationship epitaxial crystallization in the films when the content of HDPE in the blends is over 40% because of the formation of independent domain of HDPE.

关 键 词：聚丙烯 高密度聚乙烯 共混物 

分 类 号：O632.12[理学—高分子化学]