Abstract
In the present study, polypyrrole (PPy) and PPy/MnO2 composites were synthesized using a modified chemical oxidation polymerization method. The polymerization was carried out in the aqueous medium using FeCl3·6H2O as an oxidant. The synthesized materials were characterized using XRD, SEM, EDX, TGA, FT-IR, surface area analyzer, UV–visible spectrophotometry and LCR-meter. The results confirmed the successful synthesis of materials with amorphous and crystalline nature of PPy and PPy/MnO2 composites, respectively. PPy/MnO2 composites were found to be thermally more stable with large surface area as compared to PPy. The PPy was found to be porous in nature while PPy/MnO2 composites have compact structure. The elemental analysis confirmed the presence of MnO2 in the composites; however, greater quantity of MnO2 was observed than the added amount with an efficient influence on the doping level of PPy. The synthesized materials showed semiconducting nature and their resistance was found to be dependent on temperature and MnO2 content in the composites.
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Khan, H., Malook, K. & Shah, M. Polypyrrole/MnO2 composites: synthesis, structural and electrical properties. J Mater Sci: Mater Electron 29, 9090–9098 (2018). https://doi.org/10.1007/s10854-018-8936-0
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DOI: https://doi.org/10.1007/s10854-018-8936-0