HDPE/LLDPE共混物高取向薄膜微结构电子显微学研究  

Electron Microscopy Study of Microstructures of Highly Oriented Film of HDPE/LLDPE Blends

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实验室

出　　处：《电子显微学报》1991年第1期57-62,共6页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金

摘　　要：本工作用透射电镜(TEM)、电子衍射和示差扫描量热计(DSC)等方法研究高密度聚乙烯(HDPE)和线性低密度聚乙烯(LLDPE)共混物高取向薄膜的微结构。结果表明熔体拉伸HDPE/LLDPE共混物薄膜含有高取向片晶结构。随着共混物中LLDPE含量的增加,片晶的尺寸相应减小。当LLDPE含量超过50％时,结晶结构从纯HDPE的非对称性纤维结构变为对称性纤维结构。高取向共混物在全组成范围成内形成共结晶。The microstructures of highly oriented melt drawn film of blends of high density polyethylene (HDPE) withlinear-low-density polyethylene (LLDPE) were investigated by transmission electron microscopy, electrondiffraction and differential scanning calorimetry (DSC). The average crystal size and long period of HDPE de-crease with addition of LLDPE. when the LLDPE content is over 50%, the film texture changes from a singlecrystal texture to fiber symmetric. The highly oriented blends form co-crystallization in the whole range ofcomposition.

关 键 词：HDPE/LLDPE 共混物 薄膜 微结构 

分 类 号：O632.12[理学—高分子化学]