Complex permittivity and relaxation in aqueous solutions of methyl ethyl ketone

The superhigh frequency dielectric properties of aqueous solutions of methy l ethyl ketone were studied in the temperature range 288-308 K. The special features of the experimental methods currently in use were analyzed. The f requency dependences of permittivity (epsilon') and loss (epsilon ") obtain ed in a wide frequency range (10-110 GHz) obeyed the Debye equation. To wit hin the accuracy of measurements, no additional relaxation processes were o bserved in the high-frequency millimeter hand region (80-110 GHz). The rela xation times and the enthalpies of activation of dielectric relaxation were calculated for solutions of acetone and methyl ethyl ketone. an increase i n the relaxation times of both solutions was evidence of water structure st abilization.