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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
Dielectric Relaxations of Emulsions of Saline Aqueous Solutions [PDF] |
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AUTHORS |
J. P. Le Petit, G. Deibos,
A. M. Bottreau, Y. Dutuit, C. Marzat and
R. Cabanas 1977 12 4 335-340 |
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Abstract The complex permittivity of emulsions
of KCl aqueous solutions has been measured at room temperature from 1 MHz up
to 38 GHz. In each sample the aqueous solution is dispersed in the
emulsifying medium in droplets, a few microns in diameter. The results
obtained reveal the absorption band related to interfacial polarization
phenomena and the absorption band due to the dielectric relaxation of the
dispersed solution. The frequency positions of these bands in relation to the
proportion in volume and the saline concentration of the dispersed solution, have been studied. As theoretical calculations
led us to expect, the absorption band of interfacial polarization moves to
higher frequencies when the conductivity of dispersed solution increases, and
the absorption band due to the dielectric relaxation of the dispersed liquid
phase is at higher frequencies than that of the same liquid when
non-dispersed. |
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