Preparation of Fe3O4/PVP magnetic nanofibers via in situ method with electrospinning

Abstract

Ferroferric oxide (Fe3O4) magnetic nanoparticles are easily agglomerated due to their large specific surface area, and cannot be uniformly dispersed in polymer fiber matrix fabricated from electrospinning solution. In order to obtain uniform dispersion of Fe3O4 in composite nanofibers, a new method is used by mixing organic precursor of ferroferric oxide iron acetylacetonate (Fe (acac)3) and organic polymer polyvinylpyrrolidone (PVP), then subjected nanofibers through electrospinning and formed ferric oxide/polyvinylpyrrolidone (Fe3O4/PVP) fibers via in-situ calcination at low temperature. The morphology of the fibers and the dispersion of Fe3O4 particles in the fibers were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystallization of the magnetic fibers was characterized by X-ray diffraction (XRD). The vibrating sample magnetometer (VSM) was used. The magnetic measurement of the fiber shows that the magnetic nanofibers have better superparamagnetism, which are expected to be used as a drug-loaded magnetic cloth in the field of biomedicine.