Glass transition relaxations in thin suspended polymer films

被引：30

作者：

Svanberg, C. ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Appl Phys, SE-41296 Gothenburg, Sweden

来源：

MACROMOLECULES | 2007年 / 40卷 / 02期

关键词：

D O I：

10.1021/ma061967b

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Using dielectric spectroscopy, we probe the structural relaxation processes in thin freely suspended polystyrene films. For thin films we observe a relaxation scenario distinctly different from that of bulk polystyrene. The main glass transition relaxation becomes faster with decreasing film thickness, indicating a reduction in the glass transition temperature. For thin films we observe an additional process with an Arrhenius temperature dependence. This process is unique for thin freely suspended films and is not present in bulk polystyrene.

引用

页码：312 / 315

页数：4

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