Evidence for dynamic heterogeneities in computer simulations of miscible polymer blends

Sudesh Y. Kamath, Ralph H. Colby, Sanat K. Kumar

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The controversial origins of the unusual dynamics of miscible polymer blends are incisively probed through computer simulations. The distribution of mobilities experienced by a probe monomer in a miscible blend of chains with disparate glass transition temperatures is found to be much broader than in the pure polymers, providing clear evidence for local concentration variations in the mixture. These concentration fluctutations yield distinctly different temperature dependences for the dynamics of the two different components, in a manner that closely mimics experiments.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume67
Issue number1
DOIs
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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