A model for slip at polymer/solid interfaces

Alexander L. Yarin, Michael D. Graham

    Research output: Contribution to journalArticlepeer-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 languageEnglish
    Pages (from-to)1491-1504
    Number of pages14
    JournalJournal of Rheology
    Volume42
    Issue number6
    DOIs
    Publication statusPublished - 1998

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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