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Dielectric and Electrical Studies of PMMA and PVP in Polar Solvents

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Abstract:

The dielectric and electric properties of poly (methyl Methacrylate) (PMMA) and Poly (vinyl Pyrrolidione) (PVP) in polar solvent have been studied in the frequency range of 20 Hz to 2 MHz at room temperature. The effect of polar solvent environment on the dielectric and electrical parameters such as the complex dielectric constant (Є*), relaxation times complex electrical modulus (M*) and complex impedance (Z*) has been analysed . Dielectric dispersion curves show that the polymer concentration plays an important role in governing its segmental motion in solvent solution. At low frequencies, the ionic conduction and electrode polarization seems to have dominant influence on the large increase of complex dielectric constant values.

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Periodical:

Solid State Phenomena (Volume 209)

Pages:

133-136

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.209.133

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Online since:

November 2013

Authors:

Dharmishtha Barot, Deepti Tripathi

Keywords:

Complex Dielectric Constant, Complex Impedance, Dielectric Dispersion, Electric Modulus, Electrical Conductivity

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