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Novel poly (vinyl butyral) (PVB) /polyaniline-cenosphere composite film for EMI shielding

Bora, Pritom J and Shahidsha, N and Madras, Giridhar and Kishore, * and Ramamurthy, Praveen C (2016) Novel poly (vinyl butyral) (PVB) /polyaniline-cenosphere composite film for EMI shielding. In: International Conference on Condensed Matter and Applied Physics (ICC), OCT 30-31, 2015, Bikaner, INDIA.

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Official URL: http://dx.doi.org/10.1063/1.4946697


in-situ synthesis ofpolyaniline (PANI)/fly ash cenosphere (hollow microspheres) composite was carried out under nitrogen atmosphere at -30 +/- 2 degrees C. Investigated electromagnetic shielding effectiveness (EMI SE) of ree standing PVB/PANI-cenosphere (PVBPC) composite films prepared by solution casting indicates an appreciable shielding. The most effective EMI SE of 30.3 dB was obtained for 197 +/- 3 mu m thicker flexible film over the frequency range 8.2-12.4 GHz. Mechanistically, absorption was found to be dominant. The obtained shielding effectiveness due to absorbance (SEA) of PVBPC film is more than two times higher than PVB/PAN I composite film. In the presence of hollow PAN I-cenospheres in PVB matrix the time average power of incident electromagnetic wave decreases resulting in an increase of absorbance.

Item Type: Conference Proceedings
Series.: AIP Conference Proceedings
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 30 Jun 2016 04:29
Last Modified: 11 Oct 2018 17:26
URI: http://eprints.iisc.ac.in/id/eprint/54107

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