Dielectric and Ultrasonic Relaxation of P-Azoxy Anisole in Benzene and Carbon Tetrachloride at Room Temperature

The dielectric, conductivity, and ultrasonic measurements for p-azoxy anisole are done in its solution in benzene and carbon tetrachloride at room temperature and various concentrations. The density and viscosity are also measured for these solutions. The dipole moment and relaxation time are computed using a new alternative method as suggested by Johri and compared with the Gopala Krishna microwave method, and the Higasi and Guggenheim static methods. Adiabatic compressibility, Rao number, van der Waal´s constant, specific acoustic impedance, and free volume are obtained using density and ultrasonic velocity. Both the solutions show 99% solid-like behavior. The measured and evaluated dielectric and ultrasonic parameters provide information about the structure of p-azoxy liquid crystals and about the solute-solvent interactions.