%0 Journal Article
%T Direct Determination of the Distribution Coefficient of Tridecyl Dimethyl Phosphine Oxide between Water and Hexane
%A Alexander V. Makievski
%A Altynay A. Sharipova
%A Eugene V. Aksenenko
%A Reinhard Miller
%A Saule B. Aidarova
%A Valentin B. Fainerman
%A Volodymyr I. Kovalchuk
%J -
%D 2018
%R https://doi.org/10.3390/colloids2030028
%X Abstract Drop profile analysis tensiometry is applied to determine the distribution coefficient of a nonionic surfactant for a water/hexane system. The basic idea is to measure the interfacial tension isotherm in two configurations: a hexane drop immersed in the surfactant aqueous solutions at different bulk concentrations, and a water drop immersed into a hexane solution of the same surfactant. Both types of experiments lead to an isotherm for the equilibrium interfacial tensions with the same slope but with a concentration shift between them. This shift refers exactly to the value of the distribution coefficient. View Full-Tex
%K adsorption kinetics
%K nonionic surfactant
%K diffusion-controlled adsorption
%K water-oil interface
%K distribution coefficient
%K surfactant partitioning
%K drop profile analysis tensiometry
%U https://www.mdpi.com/2504-5377/2/3/28