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Thermal stability and frequency-dependent electrical conductivity of poly(aniline-co-m-nitroaniline)

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Abstract

Herein, we report the frequency-dependent AC conductivity of poly(aniline-co-m-nitroaniline)s which were synthesized by chemical oxidation of aniline and m-nitroaniline using ammonium persulfate as an oxidizing agent by in situ copolymerization approach. AC conductivity of the copolymers was recorded in the frequency range of 10−3 to 108 Hz. The imaginary and real part of permittivity of as-synthesized copolymers has been measured in the frequency limit of 10−2 to 107 Hz. The copolymer PA-co-m-NA20 has demonstrated very high value of permittivity than polyaniline at low frequency. At high frequency, the permittivity of the other PA-co-m-NA is almost unaltered. The SEM images manifest the unique morphology for each copolymer. The crystallinity of the copolymer samples has been studied XRD and the thermal stability of the polymers sample has been studied by differential scanning calorimetry.

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Acknowledgements

The authors acknowledge the facilities for characterization of sample by Central Lab Unit (CLU) and Centre for Advance Research (CAM) of Qatar University, Doha.

Funding

The authors are thankful to Qatar University, for providing necessary research funding for the successful completion of the work.

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Authors and Affiliations

  1. Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar

    Umesh Somaji Waware, Mohd Rashid & A. M. S. Hamouda

  2. Department of Chemistry, Aligarh College of Education, Aligarh, 202002, India

    Mohd Rashid

Authors
  1. Umesh Somaji Waware
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  2. Mohd Rashid
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  3. A. M. S. Hamouda
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Correspondence to Umesh Somaji Waware or Mohd Rashid.

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Waware, U.S., Rashid, M. & Hamouda, A.M.S. Thermal stability and frequency-dependent electrical conductivity of poly(aniline-co-m-nitroaniline). Ionics 25, 2669–2676 (2019). https://doi.org/10.1007/s11581-018-2741-x

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  • DOI: https://doi.org/10.1007/s11581-018-2741-x

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