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World Journal of Pharmaceutical Research

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An International Peer Reviewed Journal for Pharmaceutical and Medical Research and Technology

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Abstract

DIELECTRIC RELAXATION STUDY OF AQUEOUS CELLULOSE USING DIELECTRIC SPECTROSCOPY

Shankar H. Saknure*, Ashok C. Kumbharkhane

Abstract

The complex permittivity spectra of hydroxypropyl methyl cellulose 15 Cps with water were studied by usingthe time domain reflectometry (TDR) and frequency domain technique (LCR) in thefrequency range 20 Hz to 2 MHz and 10 MHz to 30 GHz at 250C. Now a days dielectric spectroscopy technique is reliable and widely used for the measurement of complex permittivity. The complex dielectric permittivity *(), static dielectric constant (ε0) and relaxation time (τ) have been determined. The complex permittivity spectra for HPMC 15 Cps- water were fitted in the Debye-type model.

Keywords: Complex permittivity spectra, relaxation time, Electrode polarization, TDR.

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