Electromagnetic Interference Shielding Polymer Nanocomposites

This chapter covers the up-to-date research activities targeting electromagnetic interference (EMI) shielding based on polymer nanocomposites (PNCs) reinforced with a variety of nanofillers. The polymer matrices are widely diverse including thermoplastic, thermosetting, and elastomers. The nanofillers include carbon, metal/oxide, and conducting polymer nanomaterials and the combination of two or three of these materials. The unique dielectric, magnetic, and other physicochemical properties derived from certain morphology-, composition-, and loading-controlled nanostructures, for EMI shielding behaviors are elaborated. In particular, the synergistic effects of the combination of two or three different nanofillers on enhancing the EMI shielding performance are discussed. The enhanced EMI shielding effectiveness and EMI shielding mechanisms are discussed with detailed examples and are envisioned to provide rational design of next generation lightweight EMI shielding materials.