화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.18, No.11, 1037-1044, November, 2010
DOI10.1007/s13233-010-1108-6  Export Citation
Electrical conduction mechanism of polypyrrole-alginate polymer films
C. Basavaraja, Eun Ae Jo, Bong Seong Kim, Dae Gun Kim, and Do Sung Huh†
  • Department of Chemistry and Institute of Basic Science, Inje University, Gyungnam, 621-749, Korea
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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.
Keywords:alginate;polypyrrole;polymer blends;nanostructures
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