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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(08) [August 2005] >
| Title: | Dielectric study of binary mixtures of edible unsaturated oils |
| Authors: | Agrawal, Shilpi
Bhatnagar, Deepak |
| Keywords: | Unsaturated oils
Dielectric parameters
Relaxation time |
| Issue Date: | Aug-2005 |
| Publisher: | CSIR |
| IPC Code: | G01R27/26 |
| Abstract: | The dielectric and
relaxation parameters of a binary system of edible oils, containing unsaturated
fats namely mustard oil and coconut oil/ground nut oil/linseed oil in different
proportions by volume are measured at different frequencies and a constant
temperature (40°C). It is realized that at the given
temperature, the dielectric constant of prepared samples at microwave frequency
increases with increasing percentage of impurities. The dielectric loss at
microwave frequency also increases with the increase in the amount of added
impurity. However dielectric constant at optical frequency tends to decrease
under similar conditions. The proposed technique to check the purity of samples
at microwave frequencies is found better than the traditionally applied optical
technique because here different dielectric parameters like dielectric constant
( '), dielectric loss ('') and dielectric relaxation in prepared samples may be determined at
a time. |
| Page(s): | 624-629 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(08) [August 2005]
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