A model for slip at polymer/solid interfaces

Alexander L. Yarin; Michael D. Graham

doi:10.1122/1.550898

A model for slip at polymer/solid interfaces

Alexander L. Yarin, Michael D. Graham

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

A steady-state dependence of slip velocity on shear stress at polymer/solid surfaces is derived from a molecular model that includes effects of drag on polymer chains, disentanglement, and detachment and reattachment of chains from the solid surface. The dependence includes two turning points and thus a region where slip velocity is a multivalued function of shear stress. This behavior is consistent with experimental observations of abrupt and hysteretic transitions between regimes of small and large slip. Parameters involved in the model are estimated and a reasonable comparison with experiment is obtained.

Original language	English
Pages (from-to)	1491-1504
Number of pages	14
Journal	Journal of Rheology
Volume	42
Issue number	6
DOIs	https://doi.org/10.1122/1.550898
Publication status	Published - 1998

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1122/1.550898

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abstract = "A steady-state dependence of slip velocity on shear stress at polymer/solid surfaces is derived from a molecular model that includes effects of drag on polymer chains, disentanglement, and detachment and reattachment of chains from the solid surface. The dependence includes two turning points and thus a region where slip velocity is a multivalued function of shear stress. This behavior is consistent with experimental observations of abrupt and hysteretic transitions between regimes of small and large slip. Parameters involved in the model are estimated and a reasonable comparison with experiment is obtained.",

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AB - A steady-state dependence of slip velocity on shear stress at polymer/solid surfaces is derived from a molecular model that includes effects of drag on polymer chains, disentanglement, and detachment and reattachment of chains from the solid surface. The dependence includes two turning points and thus a region where slip velocity is a multivalued function of shear stress. This behavior is consistent with experimental observations of abrupt and hysteretic transitions between regimes of small and large slip. Parameters involved in the model are estimated and a reasonable comparison with experiment is obtained.

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A model for slip at polymer/solid interfaces

Abstract

ASJC Scopus subject areas

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