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Study of electrical properties of polyvinylpyrrolidone/polyacrylamide blend thin films

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Abstract.

Electrical properties of polyvinylpyrrolidone, polyacrylamide and their blend thin films have been investigated as a function of temperature and frequency. The films were prepared using solution casting method and the measurements on films were carried out at different temperatures ranging from 305 to 345 K covering a frequency range from 102 to 105 Hz. The conductivity of film samples was found to increase upon increasing the temperature. Lowering of activation energy by increasing the polyvinylpyrrolidone percentage may be due to the predominance of ion conduction mechanism caused by polyvinylpyrrolidone in the blend. The permittivity (𝜖 r) and dielectric loss (𝜖 i) were found to decrease upon increasing frequency. Temperature and frequency dependence of impedance, relaxation time and electric modulus of thin film samples have also been studied. From electric modulus formalism, polarization and conduction relaxation behaviour in the film samples have been discussed.

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Acknowledgement

The authors are grateful to the Principal and Head of the Department of Physics, M S J Govt. College, Bharatpur, for providing experimental facilities for this work. Three of the authors (H K Mahavar, A Tanwar and P J Singh) are highly thankful to the University Grants Commission (UGC), Bhopal, India for providing financial support in the form of Minor Research Project (MRP) and two of the authors (A Rawat and H K Mahavar) are also thankful to University Grants Commission (UGC), Bhopal, India for providing financial support in the form of Teacher Research Fellowship (TRF).

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Authors and Affiliations

  1. Department of Physics, M S J College, Bharatpur, 321 001, India

    A RAWAT, H K MAHAVAR, A TANWAR & P J SINGH

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  1. A RAWAT
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Correspondence to A RAWAT.

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RAWAT, A., MAHAVAR, H.K., TANWAR, A. et al. Study of electrical properties of polyvinylpyrrolidone/polyacrylamide blend thin films. Bull Mater Sci 37, 273–279 (2014). https://doi.org/10.1007/s12034-014-0639-4

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  • DOI: https://doi.org/10.1007/s12034-014-0639-4

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