Advanced applications of green materials in electromagnetic shielding

Abstract Electromagnetic interference shielding efficiency (EMI SE) is a phenomenon of restricting the proliferation of electromagnetic rays inside a space or device by mounting a barrier made of conductive material which is called a shield. Conventionally, these shields are prepared with various metals in the form of pure sheets and metal is coated on insulator sheets by various methods. Instead of metals, the recent trend is to coating textile fabrics with conductive polymers, graphene, and carbon nanotube to prepare electro-conductive textile shield. Research on conductive polymers, graphene, and carbon nanotube is geared up in recent years as green and sustainable materials in place of metals and semiconductors which have several health hazards. The use of these green materials in conjunction with textiles yields synergistic properties of both the materials resulting flexible, durable, light-weight, and efficient EMI shield. In this chapter, the preparation and characterization of all these electro-conductive textiles/films as green EMI shields are discussed.