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1611180 
Journal Article 
Relaxation and thermodynamic studies of liquid mixtures of anisole with isopropanol in benzene 
Parthipan, G; Arivazhagan, G; Subramanian, M; Thenappan, T 
2011 
1 
Physics and Chemistry of Liquids
ISSN: 0031-9104 
49 
1 
1-8 
WOS:000288741700001 
Dielectric relaxation behaviour in polar-polar mixtures of
anisole and isopropyl alcohol in benzene has been observed using the measurements of dielectric
permittivity and dielectric loss at microwave frequency at three different temperatures. Using
the Higasi method, average relaxation time, relaxation time for intra-molecular rotation and
inter-molecular rotation have been calculated for the mixtures at different compositions.
Viscosity and density of the mixtures are obtained over the entire range of concentration and
temperature studied. Thermodynamic parameters, such as enthalpy and entropy, have been calculated
for all studied concentrations, i.e. pure liquids and their mixtures. Activation free energies
due to dielectric relaxation and viscous mechanisms for the system are discussed. 
relaxation time; viscosity; permittivity; molecular interaction