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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(06) [June 2010] >
| Title: | Dielectric relaxation studies of binary mixtures of tetrahydrofuran and N-methylacetamide in benzene solutions using microwave absorption data |
| Authors: | Kumar, Raman
Sharma, Vinod
Rangra, V S |
| Keywords: | Dielectric relaxation
Binary mixtures
Microwave absorption studies |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: | Using standard
standing wave microwave X-band technique and by following Gopala Krishna’s
single frequency (9.90 GHz) concentration variational method, the
dielectric relaxation times ( ) and the dipole moments ( ) of dilute solution of tetrahydrofuran(THF), N-methylacetamide(NMA)
and THF+NMA binary mixtures in benzene solutions have been calculated at
different temperatures 25°, 30°, 35° and
40°C. The energy parameters ( He, Fe, Se) for the dielectric relaxation process for THF+NMA binary mixture
containing 30 mol% THF have been calculated at 25°, 30°, 35° and 40°C and compared with the corresponding
viscosity parameters. A good agreement between the free energy of activation
from these two sets of values shows that the dielectric relaxation process like
the viscous flow process can be treated as the rate process. From relaxation
time behaviour of THF and NMA binary mixture in benzene solution, solute-solute
types of the molecular association have been proposed. |
| Page(s): | 415-419 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(06) [June 2010]
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