Journal of Radioanalytical and Nuclear Chemistry

, Volume 322, Issue 2, pp 869–877 | Cite as

Gamma-ray irradiation-induced variations in structural and electrical properties of PVP neutral polymer in water

  • Amal BelaidiEmail author
  • Moez Guettari
  • Tahar Tajouri


The purpose of this study was to improve polyvinylpyrrolidone (PVP) electrical conductivity by means of gamma irradiation for a dosimetric application. PVP was irradiated with various doses of γ radiation and dissolved in water to investigate its structural, optical, and electrical characteristics. Electron paramagnetic resonance measurements (EPR) depicted the presence of free radical (H·). FTIR and UV–visible spectra revealed a structural deformation in the post-irradiated polymer (PVP*) through chain scission. In addition, the gap and Urbach energy were investigated and discussed. The obtained results of electrical conductivity show an exponential behavior indicating a character of a pseudo-polyelctrolyte. The pH measurements revealed an acidic character of PVP*.


Polyvinylpyrrolidone Gamma irradiation Electrical conductivity 



The authors gratefully acknowledge financial support from the Tunisian Ministry of Education, Research, and Technology. Express sincere thanks to Dr Faouzi Hosni, a head laboratory in CNSTN, for polymer irradiation and EPR measurements. Also, to Dr Khaled Farah for giving us the opportunity to work on the absorbance UV–Visible.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.NMR in Polymers and Composites Laboratory, Preparatory Institute for Engineering Studies of TunisUniversity of TunisTunisTunisia
  2. 2.Faculty of Science of BizerteUniversity of CarthageCarthageTunisia

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