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Preparation of micrometer‐sized, monodisperse, magnetic polymer particles

2003; Wiley; Volume: 88; Issue: 2 Linguagem: Inglês

10.1002/app.11720

1097-4628

Masayoshi Okubo, Hideto Minami, Tokiko Komura,

Iron oxide chemistry and applications

Abstract Micrometer‐sized, monodisperse, magnetic composite particles were prepared by heating micrometer‐sized, monodisperse, hollow polystyrene/polydivinylbenzene composite polymer particles at 200°C for 4 h (particles had been dipped in pentacarbonyliron) and then washed in 12 N HCl and water. The hollow polymer particles were produced by seeded polymerization by the dynamic swelling method that was proposed by authors. The magnetic composite particles contained Fe 3 O 4 , the content of which was 49% based on total weight, and were attracted easily in water by a 1650 G magnet. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 428–433, 2003