An electroacoustic and high-frequency dielectric response study of stagnant layer conduction in emulsion systems.

摘要: Stagnant layer conduction (or anomalous surface conduction) in perfluoromethyldecalin (PFMD) and n-hexadecane emulsions has been measured by electroacoustics verified high-frequency dielectric response experiments. The electroacoustic technique can detect the presence of stagnant from salt dependence dynamic mobility. As indifferent electrolyte concentration is increased low values (<5 mM), ζ-potential droplet size, estimated mobility normal procedures, gradually increase magnitude until size plateaus begins to decrease with added usual fashion. When taken into account, be fitted a constant distribution more realistic varying concentration. High-frequency used measure total PFMD emulsion system. Very good agreement between these two independent techniques verifies existence behind shear plane demonstrates that alone quantify its extent. This possible because unique character AcoustoSizer procedure, which estimates both particle same signal.