Interfacial Tension Studies of Electrified Liquid/Liquid Interfaces: ClassicalTechniques for New Data

摘要

Several general methods used in measurement of interfacial tension are reviewed.Consideration is given to methods that can be used on interfaces with externally applied potential and current flow. A classical technique of interfacial tension measurement, the maximum bubble pressure method, is used to study an interface between two immiscible solutions of electrolytes. This work focuses on data interpretation of systems under interfacial ion transfer. A series of quaternary ammonium cations at a range of concentrations spanning several orders of magnitude are investigated. It is suggested how the data can be used to determine the Esin-Markov coefficient and to estimate interfacial ion adsorption and changes of the interface due to current flow.