• Susan Rochelle
• Dr. Santosh Shenoy

The escalating need for sophisticated electromagnetic interference shielding materials in medical settings may motivate the innovation of advanced composites designed to attenuate electromagnetic radiation effectively. This investigation examines the synthesis and characterization of iron oxide nanoparticles integrated into an epoxy resin matrix, emphasizing their performance in shielding electromagnetic waves. Magnetic iron oxide nanoparticles, produced through coprecipitation, were embedded in epoxy resin to form lightweight, absorption-dominant shields targeting microwave frequencies (Sparavigna, 2023). This strategy appears to amplify electromagnetic interference shielding effectiveness by exploiting the intrinsic attributes of magnetic nanoparticles, such as Fe₃O₄, in polymer matrices, potentially rendering them suitable for high-frequency field mitigation (Sparavigna, 2023). The uniform dispersion of Fe₃O₄ nanoparticles in the epoxy fosters a conductive network, which may boost electromagnetic interference shielding effectiveness via synergistic electrical and magnetic losses (Sparavigna, 2023). The study delineates the structural properties and electromagnetic interference shielding effectiveness (EMI SE) of these composites, projecting their utility in curbing interference within sensitive medical contexts. Such materials may be pivotal for protecting electronics and personnel from ubiquitous electromagnetic radiation. This paper elucidates the synthesis, characterization, and EMI shielding efficacy of these innovative composites, underscoring their promise for cutting-edge applications, particularly in the X-band where hybrid nanostructures modulate epoxy composite shielding (Bheema & Etika, 2022). Agglomeration of iron oxide nanoparticles in epoxy resin is a significant challenge due to high surface energy and magnetic properties, necessitating specialized dispersion techniques (Naguib et al., 2019). Furthermore, Fe₃O₄ nanoparticles, endowed with high saturation magnetization and low resistivity, impart dual magnetic and electrical attributes, refining microwave absorption (Ramajo et al., 2009). This facilitates a shift in shielding from reflection to absorption, modulated by filler selection, yielding adaptable responses (Sparavigna, 2023). Systematically probing nanoparticle loading and dispersion synergies may optimize attenuation mechanisms in the X-band. This inquiry may advance understanding of engineering magnetic nanocomposites for exceptional EMI SE in vital sectors, notably via Fe₃O₄/TAGA integration in epoxy, harnessing dielectric-magnetic loss synergy for impedance matching (Chhetri & Kuila, 2024).

Fe3O4 nanoparticles, Epoxy nanocomposites, Electromagnetic interference (EMI) shielding, Radiation attenuation, Lead-free shielding, Microstructural dispersion.

"From Lead to Nanocomposites: Role of Iron Oxide/Epoxy Resin in Sustainable Ionizing Electromagnetic Radiation Shielding for Modern Hospitals", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 10, page no.j362-j413, October-2026, Available :http://www.jetir.org/papers/JETIRTHE2245.pdf

"From Lead to Nanocomposites: Role of Iron Oxide/Epoxy Resin in Sustainable Ionizing Electromagnetic Radiation Shielding for Modern Hospitals", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 10, page no. ppj362-j413, October-2026, Available at : http://www.jetir.org/papers/JETIRTHE2245.pdf