Thermodynamic Approach To Viscosity In The Glass Transition

The glass transition is re-investigated by means of the formulation of linear nonequilibrium thermodynamics. The process is treated for melts cooled down below their liquidus temperatures in terms of three events. These are, in the order of decreasing temperature; by-passing of crystallization, freezing-in of stress relaxation and freezing-in of near-range structural relaxation. The model is tested against data of five one-component, three simple binary and ternary, and three multicomponent systems.