Universal scaling, dynamic fragility, segmental relaxation, and vitrification in polymer melts

Erica J. Saltzman, Kenneth S. Schweizer

Research output: Contribution to journalArticlepeer-review

Abstract

Numerical methods were used to investigate the theory of dynamic barriers, segmental relaxation, dynamic fragility, and vitrification in polymer melts. The universal temperature dependence of the alpha relaxation time was predicted by establishing its connection with the idea of a nearly universal crossover time. System-specific limitations were identified by demonstrating the inter-relations between the breadth of the deeply supercooled regime and the magnetitude of the fast local Arrehenius process at the glass transition temperature. The temperature dependence of the alpha relaxation process predicted by the theory was confirmed to be accurate, as shown by the results.

Original languageEnglish (US)
Pages (from-to)2001-2009
Number of pages9
JournalJournal of Chemical Physics
Volume121
Issue number4
DOIs
StatePublished - Jul 22 2004

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Universal scaling, dynamic fragility, segmental relaxation, and vitrification in polymer melts'. Together they form a unique fingerprint.

Cite this