Kinetics of surfactant adsorption at fluid/fluid interfaces: non-ionic surfactants
نویسندگان
چکیده
منابع مشابه
Kinetics of Surfactant Adsorption at Fluid/Fluid Interfaces: Non-Ionic Surfactants
We present a model treating the kinetics of adsorption of soluble surface-active molecules at the interface between an aqueous solution and another fluid phase. The model accounts for both the diffusive transport inside the solution and the kinetics taking place at the interface using a free-energy formulation. In addition, it offers a general method of calculating dynamic surface tensions. Non...
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The adsorption at the interface between an aqueous solution of several surface-active agents and another fluid (air or oil) phase is addressed theoretically. We derive the kinetic equations from a variation of the interfacial free energy, solve them numerically, and provide an analytic solution for the simple case of a linear adsorption isotherm. Calculating asymptotic solutions analytically, w...
متن کاملAdsorption kinetics of surfactants at fluid-fluid interfaces
H. Diamant 9 Prof. D. Andelman (I~) School of Physics and Astronomy Raymond and Beverly Sackler Faculty of Exact Sciences Tel Aviv University Ramat Aviv 69978 Tel Aviv, Israel Abstract We review a new theoretical approach to the kinetics of surfactant adsorption at fluid-fluid interfaces. It yields a more complete description of the kinetics both in the aqueous solution and at the interface, de...
متن کاملKinetics of Surfactant Adsorption at Fluid-Fluid Interfaces
We present a theory for the kinetics of surfactant adsorption at the interface between an aqueous solution and another fluid (air, oil) phase. The model relies on a free-energy formulation. It describes both the diffusive transport of surfactant molecules from the bulk solution to the interface, and the kinetics taking place at the interface itself. When applied to non-ionic surfactant systems,...
متن کاملA three stage model for adsorption of non ionic surfactants
The adsorption of nonionic surfactants onto both hydrophilic and hydrophobic surfaces has been extensively researched from the point of view of physical chemistry.i,2 In these studies nonionic surfactants were assumed to interact with both the surface and each other. The resultant adsorption isotherms were then explained in terms of interaction strength and surfactant orientation. A five stage ...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 1996
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i1996-00497-y