Title :
Dielectric study of [alcohol]x[water]1-x mixtures and valuation of static permittivity and relaxation time for supercooled water
Author :
Noyel, G.A. ; Jorat, L.I. ; Huck, J.R. ; Derriche, O.
Author_Institution :
Lab. de Spectrometrie Infrahertzienne, Univ. Jean Monnet, Saint-Etienne, France
Abstract :
Results are presented which lead to the characterization of [alcohol]x[water]1-x mixtures between ambient and glass temperature over the whole molar fraction range. Suitable extrapolations to zero alcohol concentration allow one to calculate the dielectric relaxation time and the static permittivity of supercooled water below its homogeneous nucleation temperature. Use is made of a dielectric relaxation spectrometer operating from 1 MHz to 10 MHz in the temperature range -200, +100°C and a total influence cell. The results obtained confirm that supercooled water dielectric parameters down to Tg, are independent of alcohol
Keywords :
dielectric properties of liquids and solutions; dielectric relaxation; permittivity; supercooling; water; -200 to 100 C; 1E-3 to 1E7 Hz; dielectric relaxation spectrometer; dielectric relaxation time; extrapolations to zero alcohol concentration; glass transition temperature; static permittivity; supercooled water; supercooled water dielectric parameters; total influence cell; whole molar fraction range; Cost accounting; Dielectrics; Ethanol; Extrapolation; Glass; Methanol; Permittivity; Temperature;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1990. ICDL 1990. Conference Record., 10th International Conference on
Conference_Location :
Grenoble
DOI :
10.1109/ICDL.1990.202903
