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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry