Fragility and elasticity - a new perspective

Abstract

The fragility (the abnormally strong temperature dependence of the viscosity) of highly viscous liquids is shown to have two sources. The first is the temperature dependence of the barriers between inherent states considered earlier. The second is the recently discovered asymmetry between the actual inherent state and its neighbors. One needs both terms for a quantitative description.

3 pages, 1 figure

References in corpus (5)

• Is the Fragility of a Liquid Embedded in the Properties of its Glass?
• Minimal model for beta relaxation in viscous liquids
• Dynamic Arrest in Polymer Melts: Competition between Packing and Intramolecular Barriers
• A thermodynamic approach to the fragility of glass-forming polymers
• An asymmetry model for the highly viscous flow

Cited by in corpus (3)

• The instantaneous shear modulus in the shoving model
• Theory of heterogeneous viscoelasticity
• On the mechanism of the highly viscous flow