Frictional dissipation and interfacial glass transition of polymeric solids

被引：17

作者：

Bureau, Lionel ^{[1
]}

Caroli, Christiane ^{[1
]}

Baumberger, Tristan ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, UMR 7588, Inst Nanosci Paris, F-75015 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.97.225501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present single contact friction experiments between a glassy polymer and smooth silica substrates grafted with alkylsilane layers of different coverage densities and morphologies. This allows us to adjust the polymer-substrate interaction strength. We find that, when going from weak to strong interaction, the response of the interfacial junction where shear localizes evolves from that of a highly viscous threshold fluid to that of a plastically deformed glassy solid. This we analyze as resulting from an interaction-induced "interfacial glass transition" helped by pressure.

引用

页数：4

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