Preparation and characterization of Fe_3O_4/poIy (2-hydroxyethyl methacrylate) magnetic nanocomposite films

摘要

Magnetic nanocomposite films of the Fe_3O_4/pHEMA were prepared by dispersing the Fe_3O_4 nanoparticles into the HEMA monomer before they were polymerized. The resultant nanocomposite films were characterized by Fourier transform infrared (FT-IR) and the vibrating sample magnetometer (VSM). The swelling behavies and the hemolytic ratios of the filmes were also investigated in this work.The equilibrium swelling ratio decreased with the increase of the amount of nanoparticles. The nanocomposite films had a clear superparamagnetic behavior because of the addition of nanoparticles. The hemolytic ratios were all lower than 5%, which indicated that the nanocomposites films had the good blood compatibility and can be used in the biomedical field.