Dielectric relaxation study of substituted nicotinates and their ternary mixtures

Abstract

The dielectric relaxation behaviour of three nicotinates, namely benzyl-nicotinate (BN), methyl-isonicotinate (MIN), and ethyl-nicotinate (EN), and their ternary mixture compositions are studied at different temperatures by applying signals at different frequencies viz. microwave frequency of 10.16 GHz, optical frequency, and static frequency of 300 Hz. Different dielectric parameters like ε s, ε ∞, ε′, εʺ, τ (0), τ (1), τ (2), μ D( s), and μ 0( s) have been determined for individual nicotinates and their ternary mixture compositions by using measured data. The experimental values of τ (0) for the ternary mixture compositions are compared with the corresponding values calculated by different theoretical relations.