Monodispersed Magnetic Polystyrene Beads with Excellent Colloidal Stability and Strong Magnetic Response

Abstract

Monodispersed polystyrene beads incorporated with Fe(3) O(4) nanoparticles are prepared via dispersion polymerization. The resultant magnetic beads present well-defined composite structures, excellent colloidal stability, and strong magnetic response. The formation mechanism for the monodispersed composite beads, incorporated with preformed Fe(3) O(4) nanocrystals, was investigated. The potential applications of the monodispersed magnetic beads in bacteria capturing were demonstrated. After being coated with anti-Salmonella CSA-1 antibody, the magnetic beads show capturing efficiencies of >99.4% in isolating Salmonella sp.

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Pickering emulsion polymerized smart magnetic poly(methyl methacrylate)/Fe2O3 composite particles and their stimulus-response

“…From the result, the mass fraction of PMMA core was conrmed to be approximately 40 wt% which is quite low compared to conventional Pickering system. 44 Fig. 5 shows the magnetic hysteresis loops of both Fe 2 O 3 and PMMA/Fe 2 O 3 composite particles with almost no hysteresis, indicating that both particles are superparamagnetic materials for various potential applications.…”

Economic production of VAc and VEOVA 10 emulsion polymer using factorial design

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