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

Citation
A. Sawaby et al., Polarization and temperature effects on the electrical conduction of sodium acetylacetonate-polyvinyl alcohol composites, POLYM-PLAST, 40(1), 2001, pp. 65-77
Citations number
16
Categorie Soggetti
Material Science & Engineering
Journal title
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
ISSN journal
03602559 → ACNP
Volume
40
Issue
1
Year of publication
2001
Pages
65 - 77
Database
ISI
SICI code
0360-2559(2001)40:1<65:PATEOT>2.0.ZU;2-F
Abstract
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.