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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 1: 29 - 32

DOI: https://doi.org/10.3724/SP.J.1077.2008.00029

Research Paper

Self-assembling Magnetic Microspheres by P(St-co-AA) and Fe3O4 Nanoparticles

  • WEN De ,
  • ZENG Hong-Mei ,
  • WANG Yan-Ying ,
  • LAI Qiong-Yu ,
  • JI Xiao-Yang
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  • 1. College of Chemistry, Sichuan University, Chengdu 610064, China; 2. Analytical and Testing Center, Sichuan University, Chengdu 610064, China

Received date: 2007-01-08

  Revised date: 2007-03-13

  Online published: 2008-01-20

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Abstract

Uniform P(St-co-AA) microspheres were prepared by microemulsion polymerization. The Fe3O4/P(St-co-AA) microspheres with a high magnetic content were prepared by electrostatic self-assembly using P(St-co-AA) microspheres with Fe3O4 nanoparticles synthesized by co-precipitation. The effects of pH, stirring on the preparation of Fe3O4/P (St-co-AA) were investigated. All samples were characterized by transmission electron microscope (TEM), scanning electron microscope(SEM), X-ray diffraction(XRD), FTIR spectroscope. The magnetic property of the obtained magnetic powder with Fe3O4 single phase was tested by VSM. The results indicate that the average sizes of polymer microspheres P(St-co-AA) with carboxyl and the magnetic powders Fe3O4 are 70nm and 10nm, respectively. Magnetic property measurement shows that the saturated magnetization of the magnetic powders is 69A·m2·kg-1 when the applied field is up to 1.5×106/pi(A/m) at room temperature. The assembled Fe3O4/ P(St-co-AA) with an average size of 800nm is spherical and the content of magnetic powders is 15.8％.

Key words： Fe3O4; P(St-co-AA) microspheres; self-assembly; magnetic microsphere

Cite this article

WEN De , ZENG Hong-Mei , WANG Yan-Ying , LAI Qiong-Yu , JI Xiao-Yang . Self-assembling Magnetic Microspheres by P(St-co-AA) and Fe3O4 Nanoparticles[J]. Journal of Inorganic Materials, 2008 , 23(1) : 29 -32 . DOI: 10.3724/SP.J.1077.2008.00029

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