BSU bulletin. Chemistry. Physics
Bibliographic description:
, , , ABOUT GLASS TRANSITION CRITERION MODIFICATIONS OF HIGHLY VISCOUS LIQUIDS // BSU bulletin. Chemistry. Physics. - 2019. №4. . - С. 39-46.
Title:
ABOUT GLASS TRANSITION CRITERION MODIFICATIONS OF HIGHLY VISCOUS LIQUIDS
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Annotation:
In the framework of the model of delocalized atoms, a modification of the glass transition criterion proposed earlier is considered. Its justification is given. A linear correlation was es- tablished between the energy of atom delocalization and the glass transition temperature of sodium-germanate, alkali-silicate and sodium-borate glasses. According to the glass transi- tion criterion, the delocalization energy of an atom is linearly dependent on the glass transi- tion temperature not passing through the origin. In order to bring this criterion into line with the experiment, an empirical term is introduced into it. The introduction of this term is quali- tatively justified in the framework of the model of delocalized atoms.
Keywords:
glass transition, atom delocalization, viscosity equation, inorganic glasses, glass transition energy, highly viscous liquids, high molecular weight compounds
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