oa South African Journal of Chemistry - Study of preparation and properties on polymer-modified magnetite nanoparticles : research article



In this paper, polyacrylamide (PAM)-modified magnetite (FeO) nanoparticles were prepared by polymerization in aqueous solution. The particle size, morphology, crystal phase and magnetic properties were measured utilizing scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. The size distribution and stability of the nanoparticles in aqueous solution were evaluated using the laser particle size analyzer and ultraviolet-visible spectroscopy (UV-vis). The influences of the dose of acrylamide (AM) and the pH value on the particle size and stability were also examined. The results showed that the FeO nanoparticles possessed superparamagnetic property and super dispersion stability in aqueous solution after PAM modification.


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