Physical aging of ultrathin polymer films above and below the bulk glass transition temperature: Effects of attractive vs neutral polymer-substrate interactions measured by fluorescence

被引：106

作者：

Priestley, RD

Broadbelt, LJ ^{[1
]}

Torkelson, JM

机构：

[1] Northwestern Univ, Dept Chem & Biol Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

MACROMOLECULES | 2005年 / 38卷 / 03期

关键词：

D O I：

10.1021/ma047994o

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 characterization of physical aging of ultrathin polymer films above and below the bulk glass transition temperature was discussed. Fluorescence of mobility-sensitive or free-volume-sensitive chromophores was used to show aging in bulk polymers. 4-tricyanovinyl-[N-(2-hydroxyethy-N-ethyl]aniline (TC1) was used to monitor the ageing at T g.bulk-25K in ultrathin poly(isobutyl methacrylate) (PIMBA) films. It was found that the aging rate was independent of thickness down to 10 nm.

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页码：654 / 657

页数：4

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