Development and Evaluation of Bafe12o19-Pani-MWCNT Composite for Electromagnetic Interference (Emi) Shielding

Abstract

Abstract-The salient individual properties of BaFe 12 O 19 , MWCNT, and PANI show promise in exhibiting excellent electromagnetic interference (EMI) shielding when they are combined. This research work focuses on developing a composite consisting of all three materials through a simple polymerization process and then evaluating its potential EMI shielding behaviour through electromagnetic measurements. The composite formation was morphologically and structurally verified through XRD, FTIR and FESEM measurements. The presence of main functional groups characteristic to PANI in the composite samples as shown by its FTIR spectra indicates its successful preparation through this method while FESEM micrographs show the random distribution of the composite constituents. The composite is conductive in nature with values reaching as high as 12.43 S/m for the composite with the highest MWCNT wt% (BPM 1 3 25). Electromagnetic measurements done at the X-band show promising EMI shielding behaviour in all prepared composites. The overall highest SE A values are shown by sample BPM 1 3 25 with a minimum shielding value of 65 dB throughout the whole frequency band, far exceeding that of pure MWCNT.

Synthesis and Characterization of Polyaniline-Based Composites for Electromagnetic Compatibility of Electronic Devices

“…A high EMR shielding efficiency, in a wide frequency range, has been experimentally proven for composites of PANI using silver nanowires [3], particles of antimony oxide [4], graphene [5][6][7], carbon nanotubes [8,9], Ti 3 SiC 2 [10], MoS 2 [11], CuO [12], bamboo fibers [13], bagasse [14], MXene, and other fillers [15]. The EMR shielding properties of composites of PANI with magnetic nanoparticles of cobalt and iron-nickel alloy [16] and ferrites [17] have also been shown.…”