THERMODYNAMIC PROPERTIES OF MICROEMULSION WITH IMIDAZOLINIUM SURFACTANTS

The microemulsion is composed of imidazolinium surfactant, oil(n-hexad ecane), water and alcohol. The systems were studied thermodynamically by means of dilution to determine the standard free energy for alcohol to tranfer from oil phase in the interfacial region. From the effects of temperature, the entropy and enthapy were calculated, The effect o f chain length is described. It is found that the thermodynamic functi ons change linearly with the increase of the number of carbon(n) in th e alcohol, The relationship between the thermodynamic quantities and t he alkyl chain length of the surfactant was determined.