Synthesis of polymeric carbon-based nanocomposites for electromagnetic shielding

In artificial intelligent retrieval, the evolution of smart electronic devices and wireless communication is a source of electromagnetic pollution (EMP), which is a severe global concern. Nowadays, conductive polymeric nanocomposites are exceptionally desirable for electromagnetic interference shielding (EMI) applications due to their good conductive and unique shielding properties. The aim of the present work is to study the EMI shielding effectiveness of thin films. For this purpose, we have synthesized PVA-based nanocomposite films. Reduced graphene oxide (rGO), and iron oxide nanoparticles were used as nanofillers. Nanoparticles of iron oxide were synthesized by the co-precipitation method, whereas rGO was synthesized by modified Hummer's method. XRD (X-ray diffraction), FTIR (Fourier transform infrared) spectroscopy, (RBS), Rutherford backscattering spectroscopy, Current-Voltage (IV) measurements and Impedance spectroscopy were used for the characterization of nanocomposites, 3.5 dB, for iron oxide/PVA thin films at 12 GHz frequency range. rGO/PVA thin films with 0.125, 0.25 and 0.5 wt% were 4.2, 8.2 and 12.3 dB, respectively, at 12 GHz range. Such shielding materials have useful applications in military field and radar systems. These shielding films can be used to protect the electronic instruments from the light waves striking them. Its use also limits health hazards to the people living in extremely radiative environments.