Theory of dynamic barriers, activated hopping, and the glass transition in polymer melts

Kenneth S. Schweizer, Erica J. Saltzman

Research output: Contribution to journalArticle

Abstract

The methods of mode coupling, density functional, and activated hopping transport theories were used for developing a statistical mechanical theory of slow segmental relaxation, dynamic barriers, and the glass transition of polymer melts. The melt was treated as a liquid of segments and a coarse-grained description of polymer chains was adopted. The theory was based on the assumption that in the deeply supercooled regime, the collective density fluctuations on length scales considerably longer than the local cage scale of primary importance. The treatment of full chain dynamics, barrier fluctuations, heterogeneity and glass forming liquids by the theory was also discussed.

Original languageEnglish (US)
Pages (from-to)1984-2000
Number of pages17
JournalJournal of Chemical Physics
Volume121
Issue number4
DOIs
StatePublished - Jul 22 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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