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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: May-2009
Publisher: CSIR
Abstract: Dielectric behaviour of three amines and their mixtures: N-methyl aniline + acrylonitrile, aniline+ acrylonitrile and N, N-dimethyl aniline + acrylonitrile at microwave frequency 9.36GHz has been studied at temperature 303K. Different dielectric quantities like dielectric constant (ε<sup>׳</sup>), dielectric loss (ε<sup>״</sup>), static dielectric constant (ε<sub>o</sub>), and dielectric constant at optical frequency (ε<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>τ</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: 383-385
ISSN: 0019-5596
Appears in Collections:IJPAP Vol.47(05) [May 2009]

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