Volume properties of reverse micellar systems AOT/n-heptane/DMSO-water

The volume properties of reverse micellar systems bis(2-ethylhexyl) sulfosuccinate sodium salt/n-heptane/dimethyl sulfoxide-water are studied via densitometry. The presence of dimethyl sulfoxide and the increase in its amount in a dimethyl sulfoxide-water mixed solvent raise the apparent volume of the polar phase. This increase is also observed when the degree of hydration of the polar core and the temperature are raised.