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Vol. 32 No. 2 (2020): Vol 32 Issue 2

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Magnetic, Thermal and Electrical Transport Properties of o-Substituted Polyanilines Encapsulated with Fe2O3 Nanoparticles

https://doi.org/10.14233/ajchem.2020.22306
R. Suganthi
Department of Chemistry, Auxilium College (Autonomous), Vellore-632006, India
S. Padmaja
Department of Chemistry, Auxilium College (Autonomous), Vellore-632006, India
S. Jhancy Mary
Department of Chemistry, Auxilium College (Autonomous), Vellore-632006, India
https://orcid.org/0000-0003-1317-6358

Corresponding Author(s) : S. Jhancy Mary

jhancy2011@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 2 (2020): Vol 32 Issue 2

Abstract

Poly(2-nitroaniline), poly(2-nitroaniline)-Fe2O3 and poly(2-methylaniline)-Fe2O3 nanocomposites synthesized by in situ chemical oxidative polymerization technique were characterized by XRD, thermal (TGA and DTA) and FTIR & UV-visible spectroscopic techniques. The thermal stability was confirmed by the integral procedural decomposition temperature (IPDT) and oxidation index (OI) calculations. The electrical conductivity and dielectric properties were also investigated. At low frequency region, the dielectric constant decreases with increase in frequency due to electrical relaxation process. At high frequencies, dielectric constant is independent of frequency. At low frequency, there was strong frequency dispersion of permittivity and above 3 Hz, a frequency independent behaviour in permittivity was observed. The materials exhibit ferromagnetic behaviour.

Keywords

Nanocomposites Oxidative polymerization Electrical conductivity Dielectric Ferromagnetic
Suganthi, R., Padmaja, S., & Mary, S. J. (2019). Magnetic, Thermal and Electrical Transport Properties of o-Substituted Polyanilines Encapsulated with Fe2O3 Nanoparticles. Asian Journal of Chemistry, 32(2), 265–270. https://doi.org/10.14233/ajchem.2020.22306
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