Abstract
Polypyrrole (PPy) was synthesized with different weight percentages of acetic acid (10 wt%, 30 wt%, and 50 wt%) through chemical oxidative polymerization. The structural, functional, optical, morphological, dielectric and electrical properties of PPy were investigated by XRD, FT-IR, UV–Vis, SEM, electrical conductivity and impedance analysis. The XRD and SEM analysis shows the formation of PPy and confirms the amorphous nature and the merely globular structure of the material. The FT-IR spectrum reveals the functional groups present in the samples. The absorption peak centered at 280 nm indicates π–π* transition in the heteroatom aromatic pyrrole ring through the recorded UV–Vis spectrum. The calculated bandgap value of the PPy samples is found to be 4.25, 3.85 and 3.50 eV. The room temperature impedance spectroscopy performs to analyze the dielectric and electrical properties of PPy with the frequency range 50 Hz–5 MHz. The AC conductivity remains constant up to 1 MHz and its value increases slowly and attains a maximum at a higher frequency which confirms the semiconducting behavior of samples.
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Acknowledgements
The authors are much grateful to the DST laboratory, Department of Physics, SRMV College of Arts and Science, Coimbatore-641020 for providing instrumental facilities to analyze electrical studies.
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Gowtham, B., Ponnuswamy, V., Pradeesh, G. et al. Physical Investigations on Various Weight Percentage of Acetic Acid Doped Polypyrrole by Chemical Oxidative Polymerization. J Inorg Organomet Polym 30, 2197–2203 (2020). https://doi.org/10.1007/s10904-019-01408-5
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DOI: https://doi.org/10.1007/s10904-019-01408-5