Lightweight Nanocomposites Based on Polypropylene and Aluminum Nanoparticles and Their Shielding Capability to Ionizing Radiation

Nanocomposites based on isotactic polypropylene and different contents of aluminum (Al) nanoparticles have been prepared in order to primarily analyze their electromagnetic interference shielding capability. Promising results have been attained in this area since values as high as 40 dB, which provide at least a 99% attenuation of the electromagnetic radiation, are reached. The good balance between shielding, sample weight, cost, and processability makes these lightweight materials a good alternative to replace neat metals for that application. Moreover, a complete structural and morphological characterization, as well as an evaluation of their dielectric behavior is also performed.