Preparation of Poly(St-HEA)/Fe3O4 Using a Novel Phase Inversion Method and Characterization

Abstract

Poly(St-HEA)/Fe3O4 microspheres with hydroxy group on the surface were prepared via phase inversion method. The morphology, composition, crystalline structure of the magnetic microspheres were characterized by transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, respectively. The effect of amount of KH-570 on modified Fe3O4 nanoparticles in monomer dispersity was studied. FTIR analysis shows that KH-570 was successfully introduced on the surface of Fe3O4 nanoparticles. XRD analysis shows that KH-570-modified Fe3O4 nanoparticles and poly(St-HEA)/Fe3O4 microspheres possesses the same spinel structure of Fe3O4 nanoparticles. TEM analysis shows that Fe3O4 nanoparticles were encapsulated into the poly(St-HEA)/Fe3O4 microspheres. The microspheres possesses excellent magnetic responsibility.