Dielectric properties of supercooled glycerol-water solutions

Author

Huck, J.R. ; Noyel, G.A. ; Jorat, L.J.

Author_Institution

Lab. de Phys. des Mater., Saint-Etienne Univ., France

Volume

23

Issue

4

fYear

1988

fDate

8/1/1988 12:00:00 AM

Firstpage

627

Lastpage

638

Abstract

Dielectric properties of glycerol-water mixtures from 5 mHz to 2 MHz are studied over the temperature range 140 to 350 K. Dielectric relaxation time can be fitted according to the new free-volume percolation model of Cohen and Grest (1981, 1984). Static permittivity varies linearly with reciprocal temperature. Suitable extrapolations to zero glycerol concentration allowed the calculation of the dielectric relaxation time and the static permittivity of supercooled water with the relationship xi =-36.7+33980/T behavior is in good agreement with the random network model proposed by Sceats and Rice (1982).

Keywords

dielectric properties of liquids and solutions; dielectric relaxation; organic compounds; percolation; permittivity; supercooling; 140 to 350 K; 5 mHz to 2 MHz; Cohen Grest model; dielectric relaxation time; free-volume percolation model; random network model; static permittivity; supercooled glycerol-water solutions; temperature range; Dielectric measurements; Extrapolation; Ferroelectric materials; Glass; Permittivity; Temperature distribution; Temperature measurement; Temperature sensors; Viscosity; Water;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.7335

Filename

7335