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Electrical conductivity and electromagnetic interference shielding effectiveness of nano‐structured carbon assisted poly(methyl methacrylate) nanocomposites
Author(s) -
Mondal Subhadip,
Ravindren Revathy,
Shin Beomsu,
Kim Suhyun,
Lee Hyunsang,
Ganguly Sayan,
Das Narayan Ch.,
Nah Changwoon
Publication year - 2020
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25480
Subject(s) - materials science , nanocomposite , electromagnetic shielding , composite material , poly(methyl methacrylate) , methyl methacrylate , emi , percolation threshold , electromagnetic interference , polymer , electrical resistivity and conductivity , electronic engineering , electrical engineering , copolymer , engineering
Nanostructured carbon‐based polymeric nanocomposites are gaining research interest because of their cost‐effectiveness, lightweight, and robust electromagnetic interference (EMI) shielding performance. Till now, it is a great challenge to design and fabricate highly scalable, cost‐effective nanocomposites with superior EMI shielding performance. Herein, highly scalable EMI shielding material with tunable absorbing behaviors comprising of low‐budget ketjen black (K‐CB) reinforced poly(methyl methacrylate) (PMMA) nanocomposites have been prepared using simple solvent assisted solution mixing technique followed by hot compression technique. The morphological investigation revealed the homogeneous distribution of K‐CB and strong interfacial interaction in PMMA matrix, which validated the strong reinforcement and other intriguing properties of the nanocomposites. The PMMA nanocomposites showed a low percolation threshold (2.79 wt%) and excellent electrical conductivity due to the formation of 3D conductive network like architecture within the polymer matrix. Specifically, the 10 wt% K‐CB nanocomposite possessed a superior EMI shielding performance of about 28 dB for X‐band frequency range. Further, a huge change in EMI shielding performance of PMMA nanocomposites is observed with varying thickness. The brand new K‐CB decorated PMMA nanocomposites are expected to open the door for next‐generation cost‐effective EMI shielding materials for academic and industrial applications.