Embedding of noble metal nanoclusters into polymers as a potential probe of the surface glass transition

被引：84

作者：

Zaporojtchenko, V ^{[1
]}

Strunskus, T ^{[1
]}

Erichsen, J ^{[1
]}

Faupel, F ^{[1
]}

机构：

[1] CAU Kiel, Tech Fak, Lehrstuhl Mat Verbunde, D-24143 Kiel, Germany

来源：

MACROMOLECULES | 2001年 / 34卷 / 05期

关键词：

D O I：

10.1021/ma0008600

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new probe made of noble metal nanoclusters embedded into polymers was used in studying the dynamic properties of polymer surface near the glass transition. The evaporated noble metals initially form discontinuous layers on polymer substrates consisting of spherical clusters, whose density and size depends on the deposition parameters as well as on the particular metal-polymer combination. The clusters are embedded into the polymer bulk upon heating the polymer above its glass transition temperature, where the polymer chains attain long-range mobility. There is a driving force for embedding the metal clusters since the surface tension γM of the metal particles exceeds the sum of the interfacial tension γMP and the polymer surface tension γP: γM>γMP+γP.

引用

页码：1125 / 1127

页数：3

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