Dielectric properties of mixtures of some rigid polar molecules with some primary alcohols

Abstract

Static dielectric constant ( ∈0) and high frequency limit dielectric constant ( ∈∞) of binary mixtures of rigid polar molecules bromobenzene and nitrobenzene each with three alcohols methanol, 1-propanol and 1-butanol over the entire concentration range have been determined at 28 °C. Static dielectric constant values were found to deviate from ideal behaviour with concentration variation of the mixture constituents in all the mixture systems. The character changes of the static dielectric constant were determined in terms of excess values of ∈0 as a function of composition of mixtures. The information regarding orientation of electric dipoles in polar liquids were obtained from the Kirkwood correlation factor. The determined values of the Bruggeman factor confirmed the molecular interaction between the constituents of the binary mixtures.