Monodispersed magnetic polystyrene beads with excellent colloidal stability and strong magnetic response

Mu Niu; Meihong Du; Zhenyu Gao; Chunhui Yang; Xianyong Lu; Ruirui Qiao; Mingyuan Gao

doi:10.1002/marc.201000293

Monodispersed magnetic polystyrene beads with excellent colloidal stability and strong magnetic response

Macromol Rapid Commun. 2010 Oct 18;31(20):1805-10. doi: 10.1002/marc.201000293.

Authors

Mu Niu¹, Meihong Du, Zhenyu Gao, Chunhui Yang, Xianyong Lu, Ruirui Qiao, Mingyuan Gao

Affiliation

¹ Institute of Chemistry, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China.

PMID: 21567597
DOI: 10.1002/marc.201000293

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.