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Title: Dielectric relaxation studies of ternary liquid mixtures of aniline and substituted anilines with acrylonitrile in the microwave region
Authors: Kalaivani, T
Krishnan, S
Keywords: Dielectric relaxation
Frequency domain technique
Issue Date: Dec-2009
Publisher: CSIR
Abstract: Dielectric behaviour of three amines and their mixtures: <i>N</i>-methyl aniline + acrylonitrile, aniline + acrylonitrile and <i>N,N</i>-dimethyl aniline + acrylonitrile at microwave frequency 9.36 GHz has been studied at temperature 303 K. Different dielectric quantities like dielectric constant (e'), dielectric loss (e"), static dielectric constant (e<sub>o</sub>), and dielectric constant at optical frequency (e<sub>∞</sub>) have been determined. The relaxation time (τ) has been calculated by both Higasi’s method and Cole-Cole method. The molar free energy of activation (Δ<i style="">F</i><sub><img src='/image/spc_char/tow.gif'> </sub>) and (Δ<i style="">F</i><sub>η</sub>) have also been calculated. The complex systems studied show the maximum relaxation time values at 1:1 complex ratio by both Higasi’s method and Cole-Cole plot method.
Description: 880-882
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.47(12) [December 2009]

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