Stress-biased rearrangements and preyield behavior in glasses

Alexander Patashinski*, Jonathan Moore, Jozef Bicerano, Scott Mudrich, Michael Mazor, Mark Ratner

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

On the basis of a physical picture of a glass as a mosaic of mesoscopic clusters differing in their yield characteristics, we propose a model for the preyield behavior in glassy materials; the model describes the stress-strain relationship at different strain rates in terms of one reduced variable. A test using experimental data for polycarbonate materials at different rates and temperatures appears favorable for the model. The model may be used to interpolate and extrapolate limited experimental data, and also provides a practical means to assess dynamic heterogeneities within polymeric glasses. When applied at different temperatures, the model gives insight into the dependence of the excitation energies on temperature (glassformer fragility) in the glassy state.

Original languageEnglish (US)
Pages (from-to)14452-14457
Number of pages6
JournalJournal of Physical Chemistry B
Volume110
Issue number29
DOIs
StatePublished - Jul 27 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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    Patashinski, A., Moore, J., Bicerano, J., Mudrich, S., Mazor, M., & Ratner, M. (2006). Stress-biased rearrangements and preyield behavior in glasses. Journal of Physical Chemistry B, 110(29), 14452-14457. https://doi.org/10.1021/jp0619484