Construction of a carbon fiber based layer-by-layer (LbL) assembly – a smart approach towards effective EMI shielding. Issue 113 (28th November 2016)

• Record Type: Journal Article
• Authors: Bhattacharjee, Yudhajit; Bhingardive, Viraj; Biswas, Sourav; Bose, Suryasarathi
• Is Part Of: RSC advances. Volume 6:Issue 113(2016)
• Page Start: 112614
• Page End: 112619
• Publication Date: 2016-11-28
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra24238c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Construction of ultrathin multilayer polymer nanocomposite films with tailor-made properties have been achieved to suppress incoming EM radiation with 52 dB shielding effectiveness at 18 GHz. 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.