Crystallization of poly(ethylene oxide) in thin films

被引：10
|
作者：
Ok, S [1 ]
Demirel, AL [1 ]
机构：
[1] Koc Univ, Dept Chem, TR-34450 Istanbul, Turkey
来源：
JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS | 2003年 / B42卷 / 3-4期
关键词：
polymer crystallization; polymer thin films; poly(ethylene oxide);
D O I：
10.1081/MB-120021590
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Crystallization of poly(ethylene oxide) (PEO) in thin films was studied using hot-stage polarized optical microscopy. Isothermal linear crystal growth rates were measured for various film thicknesses at various degrees of undercooling. At a given crystallization temperature, the linear crystal growth rate decreased exponentially with decreasing film thickness below a film thickness of 80 nm. Films showed similar spherulitic morphology down to a film thickness of 30 nm. Control experiments on hydrophilic and hydrophobic surfaces showed that surface chemistry affects stability of the polymer films and causes a competition between crystallization and dewetting.
引用
收藏
页码：611 / +
页数：12
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