| 초록 |
The polystyrene spherical particles with homogeneoualy distributed magnetites were preparedvia conventional miniemulsion polymerization. In the first, the magnetite nanoparticles were coated with oleic acid in aqueous Fe3+/Fe2+ solution using excess ammonium hydroxiode via co-precipitation method. In the second, the miniemulsion polymerization of styrene was carried out using various concentrations of initiator, emulsifier, hexadecane, acrylic acid at 70°C for 24 hr. The particle size and its distribution of the homogeneously embedded magnetites were influenced by the concentration of the initiator, emulsifier and acrylic acid. |
