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Title: Dielectric relaxation studies of binary mixtures of tetrahydrofuran and N,N-dimethylacetamide in benzene solutions using microwave absorption data
Authors: Kumar, Raman
Chaudhary, Raman Kumar
Rangra, V S
Keywords: Dielectric relaxation;Binary mixtures;Microwave absorption studies
Issue Date: Jan-2011
Publisher: NISCAIR-CSIR, India
Abstract: The dielectric relaxation times (t) and dipole moments (m) of the binary mixtures of different molar concentrations of tetrahydrofuran (THF) in the binary mixtures of tetrahydrofuran (THF) and N,N-dimethylacetamide (DMA) in benzene solutions have been studied. The physical parameters t and µ have been calculated by using standard standing wave microwave techniques and Gopala Krishna’s single frequency (9.90GHz) concentration variational method at different temperatures (25°, 30°, 35° and 40°C). The energy parameters (Hs, Fs, Ss) for the dielectric relaxation process for THF+DMA binary mixture containing 50 mol% THF have been calculated at 25°, 30°, 35° and 40°C and compared with the corresponding viscosity parameters. From the observations, it is found that the dielectric relaxation process like the viscous flow process can be treated as the rate process. On the basis of above studies, solute-solvent type of the molecular association has been proposed.
Page(s): 42-46
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.49(01) [January 2011]

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