Reentrant Behavior of Relaxation Time with Viscosity at Varying Composition in Binary Mixtures

Mukherjee, Arnab and Srinivas, Goundla and Bagchi, Biman (2001) Reentrant Behavior of Relaxation Time with Viscosity at Varying Composition in Binary Mixtures. In: Physical Review Letters, 86 (26). 5926 -5929.

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Abstract

In order to understand the long known anomalies in the composition dependence of diffusion and viscosity of binary mixtures, we introduce here two new models and carry out extensive molecular dynamics simulations. In these models, the two molecular species (A and B) have the same diameter and mass. In model I the interspecies interaction is more attractive than that between the pure components, while the reverse is true for model II. Simulations and mode coupling theory calculations reveal that the models can capture a wide variety of behavior observed in experiments, including the reentrant viscosity dependence of relaxation time.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	American Physical Society
Additional Information:	Copyright for this article belongs to American Physical Society (APS).
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	27 Oct 2004
Last Modified:	19 Sep 2010 04:16
URI:	http://eprints.iisc.ac.in/id/eprint/2057

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