Orientational ordering as a possible mechanism for viscosity-enhancement of supercooled liquids

Dattagupta, S. (1991) Orientational ordering as a possible mechanism for viscosity-enhancement of supercooled liquids Journal of Non-Crystalline Solids, 131-133 . pp. 200-203. ISSN 0022-3093

Full text not available from this repository.

Official URL: http://linkinghub.elsevier.com/retrieve/pii/002230...

Related URL: http://dx.doi.org/10.1016/0022-3093(91)90299-L

Abstract

A supercooled liquid is viewed to have regions of local orientational order which can be pictured in terms of cages that restrict single-particle diffusion. The mismatch in the orientation of two locally ordered neighbouring regions causes an internal stress which is added to the stress that appears in the Maxwell model of viscoelasticity. This leads to a renormalized Maxwell time which is related to the relaxation time and the susceptibility associated with the orientational order. Hence, when either the relaxation time or the susceptibility becomes very large, one obtains a large enhancement of the viscosity.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:9253
Deposited On:29 Oct 2010 11:11
Last Modified:28 May 2011 11:56

Repository Staff Only: item control page