Title :
Dielectric behavior of highly conducting perfluoropolyether water-in-oil microemulsions
Author :
Carlà, Marcello ; Gambi, Cecilia M C ; Giri, Maria Grazia ; Pieraccini, Loris ; Senatra, Donatella ; Chittofrati, Alba ; Sanguineti, Aldo
Author_Institution :
Dept. of Phys., Florence Univ., Italy
fDate :
8/1/1994 12:00:00 AM
Abstract :
The dielectric and conductive properties of a new ternary water-in-oil microemulsion consisting of perfluoropolyether (PFPE) oil, PFPE surfactant and water, were investigated by an impedance analysis technique in the frequency range of 5 Hz to 100 MHz. The trend of both the electrical conductivity and the static permittivity was analyzed as a function of the temperature in the interval from -10 to +40°C. Maxwell-Wagner relaxation phenomena in the MHz range and a percolative transition, of dynamic type against temperature, were observed
Keywords :
dielectric properties of liquids and solutions; dielectric relaxation; electrical conductivity of liquids; emulsions; percolation; permittivity; -10 to 40 degC; 5 Hz to 100 MHz; Maxwell-Wagner relaxation phenomena; conductive properties; dielectric properties; electrical conductivity; impedance analysis technique; percolative transition; perfluoropolyether water-in-oil microemulsions; static permittivity; Conductivity; Dielectric measurements; Impedance; Instruments; Laboratories; Permittivity; Petroleum; Physics; Radio frequency; Water;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
