EMI shielding properties of polymer blends with inclusion of graphene nano platelets

Muhammad Fayzan Shakir; Ahmad Nawaz Khan; Ramsha Khan; Sofia Javed; Asra Tariq; Muhammad Azeem; Adeel Riaz; Ahmed Shafqat; Hammad M. Cheema; Muhammad Aftab Akram; Imtiaz Ahmad; Rahim Jan

Results in Physics (Sep 2019)

EMI shielding properties of polymer blends with inclusion of graphene nano platelets

Muhammad Fayzan Shakir,
Ahmad Nawaz Khan,
Ramsha Khan,
Sofia Javed,
Asra Tariq,
Muhammad Azeem,
Adeel Riaz,
Ahmed Shafqat,
Hammad M. Cheema,
Muhammad Aftab Akram,
Imtiaz Ahmad,
Rahim Jan

Affiliations

Muhammad Fayzan Shakir: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Ahmad Nawaz Khan: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan; Corresponding authors.
Ramsha Khan: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Sofia Javed: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Asra Tariq: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Muhammad Azeem: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Adeel Riaz: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Ahmed Shafqat: Research Institute for Microwave and Millimeter-Wave Studies (RIMMS), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Hammad M. Cheema: Research Institute for Microwave and Millimeter-Wave Studies (RIMMS), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Muhammad Aftab Akram: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
Imtiaz Ahmad: Department of Physics, University of Peshawar, KPK, Pakistan
Rahim Jan: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan; Corresponding authors.

Journal volume & issue: Vol. 14

Abstract

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Polymer blends of poly vinyle chloride (PVC) and polyaniline (PANI) with the inclusion of graphene nano platelets (GNP) are fabricated to enhance the EMI shielding effectiveness. The initial assessment with cyclic voltammetry has shown improved electrical conductivity both for PVC/PANI blends and PVC/PANI/GNP composites. The capacitive effect of the blends and composites is evaluated at lower frequency region (100 Hz−5 MHz). EMI shielding measurements of PVC/PANI/GNP composites is performed in the frequency range 10 MHz–20 GHz. In case of PVC/PANI (15 wt%) blends, a maximum attenuation of ∼27 dB is attained which is enhanced to ∼51 dB (max.) with the inclusion of 5 wt% GNP, mainly due to the absorption phenomena. The enhanced shielding effectiveness is achieved mainly in the frequency range 11–20 GHz. The dispersion state, fillers nature and their interaction may be the main aspects for the enhanced EMI shielding effectiveness of hybrid polymeric nanocomposites. Keywords: Polymeric composites, Electrical properties, EMI shielding, Graphene

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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