Surface relaxation in glassy polymers

ORAL

Abstract

We have used nanohole relaxation to measure the viscoelastic properties of the first 1-4 nm of the surface of glassy polymer PS and i-PMMA. In both cases we find evidence for complete relaxation of the surface below the bulk glass transition temperature $T_g$. For the case of PS, the temperature dependence of the relaxation was measured in the range $240K

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Authors

  • James Forrest

    University of Waterloo

  • Dongping Qi

    University of Waterloo

  • Zahra Fakhraai

    Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada, University of Waterloo