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Article

Thermodynamic−Kinetic Correlations in Supercooled Liquids: A Critical Survey of Experimental Data and Predictions of the Random First-Order Transition Theory of Glasses

Jacob D. Stevenson^† and Peter G. Wolynes*

Department of Physics and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093

J. Phys. Chem. B, 2005, 109 (31), pp 15093–15097

DOI: 10.1021/jp052279h

Publication Date (Web): July 15, 2005

†

jstevens@physics.ucsd.edu.

Corresponding author: pwolynes@ucsd.edu.

Abstract

Thermodynamics and kinetics are thought to be linked in glass transitions. The quantitative predictions of α-relaxation activation barriers provided by the theory of glasses based on random first-order transitions are compared with the experimental results for 44 substances. The agreement found between the predicted activation energies near T_g and experiment is excellent. These predictions depend on the configurational heat capacity change on vitrification and the entropy of melting the crystal which are experimental inputs.

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