Mrs. Clarissa de Paula Dias, MSc, MA

Abstract:

This study aims to develop a nanocomposite based on recycled polycarbonate (PC) with reduced graphene oxide (rGO), intended for applications in electromagnetic radiation absorbing materials (ERAM), with emphasis on stealth technologies applied to vessels [1]. The nanofibers were produced using the Solution Blow Spinning (SBS) process, aiming to maximize efficiency in electromagnetic radiation absorption [2-4]. The methodology involved the characterization of the individual components (PC and rGO) and the resulting nanocomposite through thermal analyses (DSC and TGA), gel permeation chromatography (GPC) to determine the molar mass of PC, and complementary techniques such as Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and electromagnetic radiation absorption analysis using a vector network analyzer. The results demonstrated that incorporating different proportions of rGO into the PC significantly enhanced radiation absorption in the X-band, indicating the formation of a promising functional system for electromagnetic shielding applications. The combined analyses revealed a homogeneous morphological structure and suitable thermal and structural properties, confirming the potential of the developed nanocomposite as an efficient alternative for use in defense and security systems [5-6].