Crystalline structures in ultrathin poly(ethylene oxide)/poly(methyl methacrylate) blend films

被引：48

作者：

Wang, MT ^{[1
]}

Braun, HG ^{[1
]}

Meyer, E ^{[1
]}

机构：

[1] Inst Polymer Res Dresden, D-01069 Dresden, Germany

来源：

POLYMER | 2003年 / 44卷 / 17期

关键词：

crystallization; poly(ethylene oxide); surface pattern;

D O I：

10.1016/S0032-3861(03)00492-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Amorphous poly(ethylene oxide)/poly(methyl methacrylate) (PEO/PMMA) blend films in extremely constrained states are meta-stable and phase separation of fractal-like branched patterns happens in them due to heterogeneously nucleated PEO crystallization by diffusion-limited aggregation. The crystalline branches are viewed flat-on with PEO chains oriented normal to the substrate surface, upon increasing PMMA content the branch width remains invariant but thickness increases. It is revealed that PMMA imposes different effects on PEO crystallization, i.e. the length and thickness of branches, depending on the film composition. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：5015 / 5021

页数：7

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