Abstract
Ultrasonic velocities and densities of quaternary systems of 2-butoxyethanol—hexadecyltrimethylammonium bromide—water—decane/benzene and 2-butoxyethanol—sodium dodecylbenzenesulfonate—water—benzene were measured at 25 and 40°C. Adiabatic compressibilities, apparent molar volumes, and apparent molar adiabatic compressibilities were estimated from these data. Decreasing ultrasonic velocities and increasing adiabatic compressibilities are observed as a function of increasing concentrations of oil and water, indicating the possible formation of oil-in-water and water-in-oil microemulsions. Some solutions were examined under an optical microscope and small droplets were observed. Proton NMR and photon correlation spectroscopy data indicate the presence of microemulsion phases. A good correlation exists between the adiabatic compressibility property and the size of the microemulsion droplets.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call