Recent Advances in Graphene-Based Polymer Nanocomposites and Foams for Electromagnetic Interference Shielding Applications

Electromagnetic interference (EMI) that has profusely permeated through our lives nowadays is an alarming problem can never be overstated due to damaging the performance of an EM device or adversely affecting human health. Numerous shielding materials have been explored and, among these, polymer nanocomposites and their foams seem to be one of the best candidates. They have enormous EMI-shielding properties that are impressive to the scientific society. In this paper, polymeric nanocomposites and foams, incorporating graphene and its hybrid derivatives such as graphene-Mxene and -metal oxides, are recommended and evaluated from A to Z in a practical way with respect to undoing health damage. There has been recently a fierce debate among researchers as to which procedure, particle, structure, and polymeric matrix are designated best for EMI performance. Over the past decade, graphenebased composites with various process conditions and structures (such as foams and solid composite) have also drawn attention due to their undeniable role in electromagnetism as compared to their nano- and microcounterparts-all of them are precisely scrutinized in the current paper. This article presents the operating principles of shielding mechanisms behind EMI technology, emphasizes some of their advantages over existing polymer nanocomposites and foams containing graphene and its 2D-derivatives, identifies some development challenges, and looks at the main focus of improving performance in this area.