Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces
AbstractThe measured dynamic surface tension of a water drop in air saturated by heptane vapor shows a sharp decrease from about 60 mN m−1 to 40 mN m−1, and less after a certain adsorption time. The observed adsorption kinetics is analyzed by a theoretical model based on multilayer adsorption of alkanes from the vapor phase at the water surface. The model assumes a dependence of the kinetic coefficients of adsorption and desorption on the surface coverage and in equilibrium it reduces to the classical Brunauer–Emmett–Teller adsorption isotherm. The calculated time dependencies of adsorption and surface tension agree well with experimental data and predict a five-layer adsorption of heptane. View Full-Text
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Kovalchuk, V.I.; Aksenenko, E.V.; Fainerman, V.B.; Javadi, A.; Miller, R. Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces. Colloids Interfaces 2017, 1, 8.
Kovalchuk VI, Aksenenko EV, Fainerman VB, Javadi A, Miller R. Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces. Colloids and Interfaces. 2017; 1(1):8.Chicago/Turabian Style
Kovalchuk, Volodymyr I.; Aksenenko, Eugene V.; Fainerman, Valentin B.; Javadi, Aliyar; Miller, Reinhard. 2017. "Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces." Colloids Interfaces 1, no. 1: 8.