THE EFFECT OF SURFACTANT MICELLES ON THE ALKALINE-HYDROLYSIS OF DIMETHYLFORMAMIDE

The alkaline hydrolysis of dimethylformamide has been studied at 40 de grees C in micellar solutions of single surfactant (CTAB, SDS, Brij 35 ) with the analog thermoanalytical curve method of thermokinetics. A k inetic equation of micellar catalysis under the condition of higher re actant concentration than micellar concentration ([S]>[M]) has been de rived from the pseudophase model of micellar catalysis and some relati ve assumptions. The kinetic parameters, k(m), k(2m) and the associatio n constant of reactant with micelle K-1, have been calculated in this way, the results indicate that these surfactant micelles exhibit catal ytic effect on the reaction. This is attributed to the micropolarity a nd local concentration effect of micelles.