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

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Preparation and Dielectric Properties of Polyaniline-Coated Magnetite Nanocomposites

https://doi.org/10.14233/ajchem.2020.22352
H.K. AbdulKadir
Department of Chemical & Petrochemical Engineering, College of Engineering, University of Anbar, Ramadi, Iraq
https://orcid.org/0000-0003-4645-1248

Corresponding Author(s) : H.K. AbdulKadir

habdulkadir56@uoanbar.edu.iq

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

Abstract

The conductive polymers such as polyaniline (PANI) exhibit considerable electrical conductive properties. The coating of PANI with magnetic (Fe3O4) nanoparticles formed composites (PANI/Fe3O4) with required dielectric properties. The morphology result study of PANI/Fe3O4 by field emission scanning electron microscope (FESEM) indicate the presence of PANI with tubes like structure containing different wt % of Fe3O4 nanoparticles (5, 15, 25 wt %). The structural pattern investigated by XRD revealed the presence of Fe3O4 nanoparticles at 2θ = 35.58º, while the amorphous structure indicates the presence of PANI matrix. However, the chemical bonding analysis using FTIR shows chemical conjugation of bonds at 3336, 3300 and 3277 cm-1 due to presence of NH group in PANI and OH group in Fe3O4 nanoparticles, while presence of 504 and 526 cm-1 suggesting that Fe3O4 nanoparticles are present in the composites materials. The dielectric properties study by 4-point probe and VSM shows that PANI and PANI/Fe3O4 nanocomposites exhibit good electrical properties (1.55 to 1.35 S/cm) which are decreasing with increase of Fe3O4 nanoparticles, may be resulting due to insulating behaviour of the magnetic nanoparticles, while the magnetic properties of PANI/Fe3O4 nanocomposites indicate super paramagnetic properties with saturation magnetization of (59.4, 5.96, 11.94 and 15.43 emus/g).

Keywords

Polyaniline Fe3O4 Conductivity Magnetic properties
AbdulKadir, H. (2019). Preparation and Dielectric Properties of Polyaniline-Coated Magnetite Nanocomposites. Asian Journal of Chemistry, 32(2), 385–390. https://doi.org/10.14233/ajchem.2020.22352
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