MOLECULAR SEGREGATION AND NUCLEATION OF POLY(ETHYLENE OXIDE) CRYSTALLIZED FROM THE MELT .3. MORPHOLOGICAL-STUDY

被引：54

作者：

CHENG, SZD ^{[1
]}

BU, HS ^{[1
]}

WUNDERLICH, B ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT CHEM,TROY,NY 12181

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1988年 / 26卷 / 09期

关键词：

MOLECULES; -; Separation; POLYMERS; Crystallization;

D O I：

10.1002/polb.1988.090260911

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Solvent extraction followed by DSC, optical microscopy, and transmission electron microscopy show morphological evidence of molecular segregation for binary mixtures of poly(ethylene oxide)s (PEO). Two segregation types, namely microscopic and macroscopic segregation, have been found. A special etching method for PEO has been developed, and the crystalline textures of bulk samples crystallized at different temperatures for different molecular-mass mixtures are reported. A linkage between optical and electron microscopy is suggested. The morphology of PEO binary mixtures is crystallization-temperature and molecular-mass dependent.

引用

页码：1947 / 1964

页数：18

共 32 条

[1] SUPER-MOLECULAR STRUCTURE OF POLY(ETHYLENE OXIDE) FRACTIONS [J].