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Electromagnetic interference shielding effects of polyaniline-coated multi-wall carbon nanotubes/maghemite nanocomposites

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An Erratum to this article was published on 19 May 2012

Abstract

Highly conductive nanocomposites were prepared by in situ polymerization of polyaniline (PANi) and multi-walled carbon nanotubes (MWCNTs) as electromagnetic interference shielding materials. γ-Fe2O3 nanoparticles were also incorporated in the nanocomposites to improve the ferromagnetic properties. SEM and TEM images showed the uniformly coated PANi on the surface of MWCNTs and γ-Fe2O3. XRD peaks also confirmed the presence of MWCNT and γ-Fe2O3 in the nanocomposites. The nanocomposites showed significant improvement in permittivity, permeability, and electromagnetic interference shielding efficiency due to the conductive effect of MWCNTs and the magnetic effect of γ-Fe2O3. The electromagnetic interference shielding efficiency of nanocomposites increased up to 34.1 dB due to the synergetic effect of reflection and absorption of electromagnetic interference by MWCNTs and γ-Fe2O3 additives.

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Acknowledgment

This research was financially supported by the Ministry of Education, Science Technology (MEST) and Korea Institute for Advancement of Technology (KIAT) through the Human Resource Training Project for Regional Innovation.

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  1. Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University, Daejeon, 305-764, Republic of Korea

    Jumi Yun & Hyung-Il Kim

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  1. Jumi Yun
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  2. Hyung-Il Kim
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Correspondence to Hyung-Il Kim.

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Yun, J., Kim, HI. Electromagnetic interference shielding effects of polyaniline-coated multi-wall carbon nanotubes/maghemite nanocomposites. Polym. Bull. 68, 561–573 (2012). https://doi.org/10.1007/s00289-011-0651-4

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  • DOI: https://doi.org/10.1007/s00289-011-0651-4

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