Polyaniline-based nanocomposites for electromagnetic interference shielding applications: A review

Abstract

Based on recent advancements, the emission of electromagnetic radiation has become a serious issue of electromagnetic interferences. These electromagnetic interferences comprise of various undesirable emission of radiation that can create unwanted deprivation of equipment or structure performance. If these complications remain unresolved can create extreme damage to the security operation or communication system of several electronic devices. Various studies have been made to resolve these problems. In past years, electrically conductive polyaniline has attained a unique position due to the prosperity of its features. The absorption of microwave and EMI shielding characteristics of the electrically conductive polyaniline can be described in the relation of great electrical conductivity with strong relaxation and, polarization effects due to the existence of stronger bonds or localized charges. In the present article, the advancement in electromagnetic interference shielding with the use of nanosized polyaniline particles and their derivative nanocomposites is discussed by various parameters such as the size of the particle, absorption properties, magnetic properties, reflective properties, electrical conductivities, and dielectric properties. The electromagnetic absorption performance of conducting polyaniline nanocomposites associated with dielectric nanomaterials (graphene) and magnetic materials (γ-Fe2O3) are widely discussed. The most appropriate polyaniline-based nanocomposites can be identified by this context. Due to increasing demand of electrically conductive polyaniline for shielding materials, it is considered to be review for better understanding in advancement. This article presents recent electromagnetic interference shielding materials knowledge of nanosized polyaniline and their nanocomposites as well as their possibilities and challenges.

Research Progress with Membrane Shielding Materials for Electromagnetic/Radiation Contamination

“…In polymer technology, two kinds of materials with different properties can be combined through the use of a mixed filler system so that the resulting composite material has specific properties, which is called a filled polymer-based membrane shielding material [ 26 ]. In addition, there is a more advanced class of membrane shielding material, called conductive polymer fiber composites (ECPCs), which are obtained with the use of conducting polymers that have conjugated segments (such as those with as p-π, or π-π conjugation) [ 108 ]. What’s more, conductive polymers are light and flexible [ 109 , 110 ], and it was expected that these polymers would offer a new generation of electromagnetic interference membrane shielding materials offering excellent performance.…”

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

“…PANIcoated CNT on fabrics, 232 and MWCNT/PPy/chrome-tanned collagen ber (CF) 233 also exhibited enhanced electromagnetic interference performance. [234][235][236] Table 4 describes the preparative methods, thickness, frequency range and shielding performances for ICP/MWCNT, ICP/graphene and ICP-based ternary nanocomposites.…”

Functionalization of Conductive Polymers through Covalent Postmodification

“…Moreover, it has been shown that other properties—electrochromism, redox electroactivity, redox-driven ion exchange, remote heating/blocking of electromagnetic radiation absorption, semiconductivity, interaction with small molecules, charge storage, controlled light emission, etc., are technologically as valuable as conductivity [ 1 ]. Indeed, conducting polymers can be used in different applications: electromagnetic shielding [ 8 ], electrochromic [ 9 , 10 ], electromagnetic actuators [ 11 ], electrode materials of batteries [ 12 , 13 ] or supercapacitors [ 6 ], conducting hydrogels [ 14 ], electrochemically driven ion exchangers [ 15 ], photothermal antitumoral/antibacterial therapy [ 16 , 17 , 18 ], electrochemical sensors [ 19 ], etc. Moreover, being organic materials, they are more likely to be biocompatible and biodegradable than metals or semiconductors since no toxic elements will be produced during degradation.…”