Abstract
The polypyrrole (PPy) — alginate (Ag) blend films were synthesized using different wt% of Ag and characterized by Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-vis) spectroscopy. The morphology was examined by transmission electron microscopy (TEM). The electrical conductivity was determined by studying the I–V characteristics at temperatures ranging from 300–500 K. The results are shown by measuring the dependence of the current on the field, temperature, and blending compositions in the form of the I–V characteristics, and the analysis was made by interpretation of the Poole-Frenkel, Schottky ln (J) vs. T plots. For individual polymers, the conduction mechanism was observed to be a Poole-Frenkel type. After the polymer blend was formed, charge conduction appeared to be the Poole-Frenkel mechanism at both lower and higher temperatures. These results suggest that the Pool-Frenkel mechanism is mainly responsible for the observed conduction. The conductivity of the films increased with increasing alginate wt% in the blend and the mobility of the charge carriers increased with increasing alginate wt% concentration in the blend.
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Basavaraja, C., Jo, E.A., Kim, B.S. et al. Electrical conduction mechanism of polypyrrole-alginate polymer films. Macromol. Res. 18, 1037–1044 (2010). https://doi.org/10.1007/s13233-010-1108-6
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DOI: https://doi.org/10.1007/s13233-010-1108-6