Polarization and temperature effects on the electrical conduction of sodium acetylacetonate-polyvinyl alcohol composites

Polyvinyl alcohol was treated by different weights of sodium acetylacetonat e Na (acac) ranging from 5 to 20% wt/wt. Thin films of pure and treated pol yvinyl alcohol were prepared by casting. The structure of pure PVA was affe cted by the treatment process (to form polymer metal complex) and additiona l peaks were observed and confirmed by X-ray investigations. The electrical conductivity and the thermally stimulated depolarized curren t (TSDC) were studied at different conditions of temperature and electric f ields. The results showed that the values of the electrical conductivity an d TSDC of the treated samples increased with increasing the concentration o f the Na(acac) in the composites. The mechanism of the conduction was discu ssed and some physical parameters such as activation energy and mobility of conduction were calculated.