Abstract
ABSTRACTA simple swell‐penetration method for the controlled preparation of magnetic polymer microspheres (MPMs) was developed. The polymer microspheres (PMs) were prepared using glycidyl methacrylate as monomer and trimethylolpropane trimethacrylate as crosslinker. The PMs was functionalized by coupling sulfonate groups, and then formation of the MPMs in the presence of ferrous sulfate by swell‐penetration method. The morphology, size, and magnetic properties of the MPMs were characterized by SEM, using a vibrating sample magnetometer, and by FTIR. The results showed that the average particle size was about 1.1 μm, the surface of the microspheres was smooth, and saturated magnetization was 13.8 emu g−1. The adsorption isotherms and kinetics between bovine serum albumin and the MPMs under the optimized adsorption conditions were investigated. The MPMs were further applied to the selective separation of serum albumin from human whole blood. Simultaneously, the adsorption and separation of melamine from milk using the MPMs was investigated. The MPMs showed promising potential for separation of protein and cationic small molecular compound. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48019.
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