Because of rapid progress in the electronics industry, the market has faced a huge demand for novel materials in the field of electromagnetic interference (EMI) shielding. Conductive functional polymer composites have demonstrated great potential to fulfill this requirement. To synthesize the polymeric composites, functional conductive nanoadditives such as graphene, carbon nanotubes, and MXene are commonly added to polymeric matrices, and the conductive polymer nanocomposites exhibit promising electrical conductivity as well as EMI shielding performance. Additive manufacturing (AM), also referred to as three-dimensional (3D) printing, has been increasingly employed to fabricate complicated geometry components in the medical, aerospace, and automotive industries. AM has also been used to fabricate advanced EMI shielding materials for sensors, supercapacitors, energy storage devices, and flexible electronics. This review aims at introducing the different 3D printing methods applied for the fabrication of EMI shielding polymer nanocomposites. The impact of the AM process on the functionality of the samples is also reviewed. Additionally, the influence of the nanofiller type and amount on the microstructure and performance of the fabricated nanocomposites is discussed. Finally, the prospects and recommended works for future study are outlined.

Cellulose-based antimicrobial composites, typically in the form of functional films and cloth, have received much attention in various applications, such as food, medical and textile industries. Cellulose is a natural polymer, and is highly biodegradable, green, and sustainable. Imparting antimicrobial properties to cellulose, will significantly enhance its applications so that its commercial value can be boosted. In this review paper, the use of cellulose for antimicrobial composites' preparation was discussed. Two different approaches: surface loading/coating and interior embedding, were focused. Three most widely-applied sectors: food, medical and textile industries, were highlighted. Nanocellulose, as a leading-edge cellulose material, its unique application on the antimicrobial composites, was particularly discussed.