Abstract
Composites were prepared by incorporating magnetite (Fe3O4) nanoparticles into the matrix of crosslinked acrylamide-co-sodium acrylate in the presence of hydrophilic magnetite nanoparticles. The composite, was characterized by means of transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectra, UV–vis spectroscopy, and atomic adsorption measurements. TEM image shows that magnetite nanoparticles were finely distributed into the polymer matrix. The results of FT-IR and UV–vis spectroscopy reveal the presence of molecular level interactions between polymer groups and magnetite nanoparticles in the composite. The inhibiting action of magnetite polymer composite towards steel corrosion in 1M HCl solutions has been investigated by polarization and electrochemical impedance spectroscopy (EIS) methods. The results show that the magnetite nanoparticles have an excellent protection performance towards the corrosion of steel in aggressive solution even at very low concentration.