应用化学 ›› 1993, Vol. 0 ›› Issue (5): 81-83.

• 研究简报 • 上一篇    下一篇

LDPE/iPP复合膜的附生结晶研究

阎寿科, 林健, 杨德才   

  1. 中国科学院长春应用化学研究所高分子物理开放实验室 130022 长春
  • 收稿日期:1992-08-10 修回日期:1993-02-27 出版日期:1993-10-10 发布日期:1993-10-10

EPITAXIAL CRYSTALLIZATION OF LAYERED FILMS OF LDPE WITH HIGHLY ORIENTED iPP

Yan Shouke, Lin Jian, Yang Decai   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
  • Received:1992-08-10 Revised:1993-02-27 Published:1993-10-10 Online:1993-10-10

摘要: 附生结晶(epitaxy)是指结晶物质在结晶基质上的取向成核和生长。聚合物-聚合物的附生结晶揭示了聚合物间新的结构关系,在高分子物理领域引起了极大兴趣和广泛关注。根据结构关系,聚合物附生结晶主要分为两类,即均相附生结晶(homoepitaxy)和异相附生结晶(het-eroepitaxy)。

关键词: 全同立构聚丙烯, 支化聚乙烯, 附生结晶, 形态结构

Abstract: The epitaxial crystallization of LDPE on highly oriented iPP films was studied by means of electron microscopy. The electron microsraphs of LDPE/iPP layered films indicate that after heat treatment and recrystallization, a thin layer of LDPE can form a cross-hatched lamellar structure on the oriented iPP films. The LDPE lameliae incline ?40皌o the drawing direction of iPP film. Electron diffraction patterns confirmed that the c axes of LDPE are ?50? apart from the c axes of iPP.The contact planes are (010) of iPP and (100) of LDPE.

Key words: polypropylene, low-density polyethylene, epitaxial crystallization, morphology