Miscible binary blends of poly(ethylene oxide) and an amorphous aromatic polyamide (Aramide 34I): crystallization, melting behavior and semi-crystalline morphology

被引:27
作者
Dreezen, G
Koch, MHJ
Reynaers, H
Groeninckx, G
机构
[1] Katholieke Univ Leuven, Dept Chem, Lab Macromol Struct Chem, B-3001 Heverlee, Belgium
[2] European Mol Biol Lab, DESY, Hamburg Outstn EMBL, D-22603 Hamburg, Germany
关键词
miscible PEO/Aramide 34I blends; crystallization and melting behavior; semi-crystalline morphology;
D O I
10.1016/S0032-3861(98)00849-0
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The crystallizable component poly(ethylene oxide) (PEO) displays liquid-liquid phase separation in blends with the rigid amorphous aromatic polyamide, Aramide 34I. The crystallization, melting behavior and the semi-crystalline morphology after crystallization from the miscible state, are investigated. It is found that the amorphous component, Aramide 34I, has a pronounced effect on the crystallization behavior of PEO; PEO can only be crystallized up to 35 wt.% of Aramide 34I. A complex melting behavior of PEO with secondary crystallization and recrystallization, in which the amorphous component segregates interlamellarly during crystallization, is described. A lamellar insertion model is proposed for the location of the secondary lamellae. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:6451 / 6463
页数:13
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