Construction of a carbon fiber based layer-by-layer (LbL) assembly - a smart approach towards effective EMI shielding

Bhattacharjee, Yudhajit and Bhingardive, Viraj and Biswas, Sourav and Bose, Suryasarathi (2016) Construction of a carbon fiber based layer-by-layer (LbL) assembly - a smart approach towards effective EMI shielding. In: RSC Advances, 6 (113). pp. 112614-112619.

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Abstract

Construction of ultrathin multilayer polymer nanocomposite films by precise layer-by-layer (LbL) architectural assembly with tailor-made properties has been achieved here to block incoming EM radiation. To accomplish this, Mn (manganese)-ferrite nanoparticles were synthesized and incorporated in a thermoplastic matrix (PVDF, polyvinylidene fluoride) along with conductive MWNTs (PNTMn-Fe) by a facile solution blending process. These nanocomposite films were used as outer layers of the LbL assembly. In order to scavenge the transmitted radiation through PNTMn-Fe layers, PVDF films sandwiched with a Ni (nickel)-deposited woven carbon fiber (CF) mat (PCF@NiP), designed using a facile electroless deposition technique. These layers were used as inner layers of the LbL assembly. The different layers were then stacked and hot pressed into a composite structure. This ultrathin (0.60 mm) multilayer architecture showed an extraordinary (52 dB at 18 GHz) shielding effectiveness and thereby promises a smart approach to accomplish a lightweight, high performance, EMI shielding material.

Item Type:	Journal Article
Publication:	RSC Advances
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	07 Jan 2017 10:05
Last Modified:	07 Jan 2017 10:05
URI:	http://eprints.iisc.ac.in/id/eprint/55896

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