A model for slip at polymer/solid interfaces

Alexander L. Yarin, Michael D. Graham

Research output: Contribution to journalArticle

55 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 languageEnglish
Pages (from-to)1491-1504
Number of pages14
JournalJournal of Rheology
Volume42
Issue number6
DOIs
Publication statusPublished - 1998 Jan 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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