A new approach to description of the pressure dependence of viscosity

作者：Avramov I^*; Grzybowski A; Paluch M

来源：Journal of Non-Crystalline Solids, 2009, 355(10-12): 733-736.

DOI：10.1016/j.jnoncrysol.2009.01.031

• Glass transition
• Pressure effects
• Fragility
• Viscosity

Based on more precise description of the temperature-pressure dependence of entropy, we expand the Avramov's model. In this way, viscosity or relaxation time are described with better accuracy. It is demonstrated that there is a strong relation between the fragility parameter F, described here, and the fragility parameter m, introduced by Angell, m approximate to (13 +/- 10%)F. Analyses of experimental data on dielectric relaxation of phenylphthalein-dimethylether (PDE) are in agreement with the proposed model.

• 出版日期2009-5-1