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Monodispersed Magnetic Polystyrene Beads with Excellent Colloidal Stability and Strong Magnetic Response
Author(s) -
Niu Mu,
Du Meihong,
Gao Zhenyu,
Yang Chunhui,
Lu Xianyong,
Qiao Ruirui,
Gao Mingyuan
Publication year - 2010
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201000293
Subject(s) - polystyrene , colloid , materials science , magnetic nanoparticles , composite number , chemical engineering , polymerization , magnetic separation , nanoparticle , bead , dispersion (optics) , nanotechnology , dispersion stability , nanocrystal , polymer , composite material , metallurgy , physics , optics , engineering
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.