Abstract
In modern fundamental and applied research, protective materials containing nanostructures are becoming increasingly popular, which leads to their widespread use in fields such as medicine, pharmaceuticals, electronics and many others. In this paper, a chemical condensation method is considered for the integration of magnetic nanoparticles with superparamagnetic properties into the structures of polymer fibers, opening up new horizons for the development of materials capable of protecting against electromagnetic radiation. Magnetite nanoparticles (Fe3O4) were synthesized by chemical condensation with an optimal ratio of two aqueous solutions of iron salts. Iron sulfate (FeSO4·7H2O), iron trichloride (FeCl3·6H2O) and 25% aqueous ammonia solution (NH4OH·H2O) were used as initial reagents. The research focuses on the study of ultrathin composite fibers obtained from synthesized magnetite nanoparticles. A detailed analysis of the crystal structure, phase composition and physico-chemical properties of magnetic fillers will be carried out in the work. Imaging techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD) and energy dispersive X-ray spectroscopy (EDAX) will be used for this purpose. An analysis of the factors affecting the shielding properties of composite materials will also be carried out. The results obtained can significantly expand the range of applications of polymer fibers as protective materials in various high-tech industries.