Phenomenological model of relaxation and thermodynamic properties of supercooled liquid: The case study of propylene carbonate

M.V. Kondrin, Y.B. Lebed, A.A. Pronin and V.V. Brazhkin

Physica A: Statistical Mechanics and its Applications, 2024, vol. 649, issue C

Abstract: The diverging relaxation time in approaching hypothetical ideal glass transition is a subject of hot debate. In the current paper we demonstrate, how diverging relaxation time and turning excess entropy to zero can be avoided, using as an example the model molecular glassformer, propylene carbonate. For this purpose we compare its thermodynamic and dielectric relaxation properties, both known from the literature. The agreement between two sets of data can be achieved, if we suppose, that enthalpy of supercooled liquid propylene carbonate is governed by activation law, and relaxation time follows double exponential law. We propose the generalized Adam–Gibbs law to reconcile this two dependencies, and qualitatively discuss its implications.

Keywords: Propylene carbonate; Supercooled liquid; Dielectric spectroscopy; Thermodynamics; Adging (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:649:y:2024:i:c:s0378437124004709

DOI: 10.1016/j.physa.2024.129961

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