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Composite microbeads consisting of polymer-coated iron oxide nanoparticles are prepared by the microemulsion polymerization of styrene, divinyl benzene and methacrylic acid in the presence of emulsifiers. Fourier transform infrared spectrometer analysis indicates the presence of -COOH groups and Fe 3 O 4 of the microbeads. The amount of -COOH groups localized on the surface, which...
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