Glass temperature Adam-Gibbs theory

At equilibrium. Tf = T, and the equilibrium version of the Adam-Gibbs theory, discussed earlier, is recovered. For a glass that is not able to relax, T/ is constant, and then follows an Arrhenius temperature-dependence, which accords well with experimental measurements on deeply quenched glasses. 

Soluiiov H A (2006) The dynamic crossover temperature and the characteristic length of glass transition in accordance with the extended Adam-Gibbs theory, J Non-Oryst Solids 352 4871-4876. 

The entropy theory of the glass transition was developed by Gibbs and DiMarzio and by Adams and Gibbs to describe polymeric systems. By mixing the polymer links with holes or missing sites on a lattice to account for thermal expansion as in a lattice gas model, they could determine the entropy of mixing and the configurational entropy of the polymer. They found a second-order transition at a temperature They then pointed... 

Theory must account for these properties of fluids, their temperature dependence, the glass transition, and the properties of the amorphous solid. The two most widely accepted theories are the entropy theory, as formulated by Gibbs and Di Marzio (1958), Gibbs (1960), and Adam and Gibbs (1965), and the free-volume theory as developed by Eyring (1936), Fox and Flory (1950), Williams, Landel and Ferry (1955), Cohen and Turnbull (1959), and Turnbull and Cohen (1961, 1970). 

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