BSU bulletin. Chemistry. Physics
Bibliographic description:
, , A NEW APPROACH TO THE KINETIC CRITERION OF GLASS TRANSITION OF LIQUID // BSU bulletin. Chemistry. Physics. - 2020. №1. . - С. 15-22.
Title:
A NEW APPROACH TO THE KINETIC CRITERION OF GLASS TRANSITION OF LIQUID
Financing:
Работа выполнена при финансовой поддержке Министерства науки и высшего обра- зования РФ (грант №3.5406.2017/БЧ).
Codes:
Annotation:
Using the model of delocalized atoms, we propose justification and generalization of the Schmelzer glass transition criterion. In contrast to the Bartenev and Wolkenstein–Ptitsyn approaches, the generalized kinetic criterion of glass transition, along with the relaxation time and the melt cooling rate, shows a glass transition temperature and an almost universal dimensionless constant, which is determined by the fraction of the fluctuating volume frozen at the glass transition temperature. The idea is developed that a liquid passes into a glassy state when its cooling rate q reaches a certain proportion of Cg from the characteristic cooling rate qg=(Tg/Tg), which is closely related to the relaxation time of the structure Tg at the glass transition temperature Tg.
Keywords:
glass transition, glassy state; atom delocalization; glass transition criterion; mod- el; relaxation theory; fluctuation volume.
List of references:
Article.pdf