In this investigation, magnetic polymer composites were developed by using a magnetic field-assisted strategy. To create the composite, an interpolymeric complex based on bovine serum albumin and poly(aspartic acid) used as a polymer matrix was mixed with pre-synthesized magnetite nanoparticles and then exposed to a high-frequency magnetic field. The formation of such composite was confirmed by FTIR-spectra, scanning electron micrographs, dynamic light scattering measurements, and magnetic susceptibility analysis. The results revealed that the materials have a superparamagnetic behavior and an average hydrodynamic size ranging from 220 to 580 nm. The polymer matrix improved the colloidal stability of the magnetic filler. The proposed composites are expected to be promising candidates for biomedical applications, such as drug delivery systems. POLYM. ENG. SCI., 59:1409-1415 2019. (c) 2019 Society of Plastics Engineers
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