title: Temperature-Volume Entropic Model for Viscosities and Structural Relaxation Times of Glass Formers.
abstract: In this Letter, an entropic model recently formulated by Mauro et al. for the temperature dependence of viscosity in glass-forming materials is generalized to describe the temperature-volume dependences of viscosities and structural relaxation times near the glass transition. It is found that the generalization shows limitations of its temperature precursor. The extended model describes well the structural dielectric relaxation times τα(T,V) of supercooled van der Waals liquids. The obtained results are discussed in the context of the thermodynamic scaling law for molecular dynamics of viscous systems.
authors: †Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.
authors: E
authors: E
authors: Masiewicz
authors: †Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.
authors: A
authors: A
authors: Grzybowski
authors: ‡Department of Chemistry, University of Tennessee Knoxville, Tennessee 37996, United States.
authors: A P
authors: AP
authors: Sokolov
authors: †Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.|‡Department of Chemistry, University of Tennessee Knoxville, Tennessee 37996, United States.
authors: M
authors: M
authors: Paluch
keywords: entropic model; glass transition; thermodynamic scaling