The Pseudophase and Microscopic Models of Solubilization

The formal kinetics of reactions in micelles requires one to take into account the distribution of the reactant molecules between the micelles and the bulk solution, and also among the micelles. There are two approaches that take into account the distribution of the solubilizates between the micelles and the bulk phase. The first one is called the pseudophase model , the second one is referred to as the microscopic approach . 

The pseudophase model distinguishes the solubilized and nonsolubilized molecules and never takes into account the number of molecules solubilized in any particular micelle. The transfer of molecules from the bulk phase into the micellar pseudophase is 

The Interface Structure and Electrochemical Processes at the Boundary Between Two Immiscible Liquids Editor V. E. Kazarinov Springer-Verlag Berlin, Heidelberg 1987 

In the microscopic approach the transfer of A molecules from the bulk phase to micelles is considered as a multistep chemical equilibrium  

The usual approximation is that the solubilization of one or few molecules does not change the properties of a micelle  

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