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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.42 [2004] >
IJPAP Vol.42(11) [November 2004] >
| Title: | Microwave dielectric relaxation study of binary mixtures of cyclohexylamine with acetophenone and p-chloroacetophenone in dilute solutions of benzene |
| Authors: | Gupta, K K
Bansal, A K
Singh, P J
Sharma, K S |
| Keywords: | Microwave dielectric relaxation
Binary mixtures |
| Issue Date: | Nov-2004 |
| Publisher: | CSIR |
| IPC Code: | G 01 R 27/26 |
| Abstract: | Static
permittivity at 100 kHz, complex permittivity at 8.93 GHz and high frequency
permittivity at frequency of the D-lines of sodium of cyclohexylamine (CHA),
acetophenone (ACT), p-chloroacetophenone
(PCLA) and for the binary mixtures of CHA+ACT and CHA+PCLA have been measured
in dilute solutions of benzene at different temperatures. The measured values
of permittivity and dielectric loss have been used to evaluate relaxation times
[ 0, (1) and (2)], dipole
moment ( ), distribution
parameter ( ) and
thermodynamical parameters like molar free energy of activation ( FÎ), molar enthalpy of activation (HÎ) and molar entropy of activation (SÎ). The relaxation times of binary
mixture compositions are consistent with the computed values obtained from
various theoretical methods. Present study suggests the existence of both the
intramolecular and overall orientation in both the binary mixtures. Formation
of complexes is noticed in 1:1 binary mixture of CHA+PCLA. |
| Page(s): | 849-853 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.42(11) [November 2004]
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