Role of orientation disorder in the formation of fragility of glassy water and glycerol-like liquids

LISHCHUK, S. V., LOKOTOSH, T. V., MAGAZU', S., MALOMUZH, N. P. and MIGLIARDO, F. (2007). Role of orientation disorder in the formation of fragility of glassy water and glycerol-like liquids. Physical Review E (PRE), 76 (6), 061504.

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Link to published version:: 10.1103/PhysRevE.76.061504

Abstract

The role of H bonds in the formation of the fragility and dielectric properties of highly viscous liquids is investigated. The heuristic supposition about the proportionality between the logarithm of the shear viscosity and oscillatory contributions to the mean-square displacement of a molecule is presented. Concrete calculations are carried out for the H-bond subsystem of the two-dimensional model lattice water. The conjecture on the interrelation between the phase transition in the subsystem of H bonds and the glassification point is formulated. It is shown that (i) the glassification temperature is proportional to the H-bonding energy and (ii) the fragilities of glycerol-like liquids differ from each other as a consequence of distinct interaction energies between H bonds. The existence of a close connection between the fragility parameter and dielectric permittivity is established.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology
Identification Number: 10.1103/PhysRevE.76.061504
Depositing User: Sergey Lishchuk
Date Deposited: 15 Mar 2010 17:02
Last Modified: 15 Mar 2010 17:02
URI: http://shura.shu.ac.uk/id/eprint/1216

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