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Exchange of matter at the interface between two liquid phases |
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| Authors: | R. Miller G. Loglio U. Tesei |
| Affiliation: | (1) Department of Mechanical Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, Canada;(2) Max-Planck-Institute of Colloid and Interface Science, Rudower Chaussee 5, O-1199 Berlin-Adlershof, Germany;(3) Department of Organic Chemistry, University of Florence, Florence, Italy |
| Abstract: | Theoretical models of the exchange of matter at interfaces are necessary to interpret relaxation phenomena in surfactant adsorption layers. For liquid-liquid systems, the diffusion-controlled exchanges of surfactant molecules at the interfaces can be influenced by a simultaneous transfer of molecules from one bulk phase to the other. The diffusional mass exchange function is derived taking into account the transfer across the interface. The resulting mass exchange function is used to calculate the interfacial tension response of a liquid-liquid system. As an example, the interfacial response after a ramp-type area perturbation is calculated. |
| Keywords: | Soluble surfactants at liquid-liquid interfaces relaxation of adsorption layer exchange of matter theoretical models |
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