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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