CRCU

Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (4): 458-461.

• Articles • Previous Articles     Next Articles

Characterization of Fe3O4/P(St-MPEO) Amphiphilic Magnetic Polymer Microspheres

LIU Xue-yong1,3, DING Xiao-bin1, ZHENG Zhao-hui1, ZHANG Wen-chan1, PENG Yu-xing1, CHAN ALBERT S. C.2, YIP C. W.2, LONG Xin-ping3   

  1. 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China;
    2. Open Laboratory of Chirotechnology and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hong Kong, P. R. China;
    3. Institute of Chemical Materials, Chinese Academy of Engineering Physics, Mianyang 621900, P. R. China
  • Received:2000-10-18 Online:2002-12-24 Published:2011-08-04
  • Supported by:

    Supported by the National Natural Sciences Foundation of China(No.59903007), Hong Kong Polytechnic University, the Youth Reseacher Foundation of Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences.

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Abstract: Amphiphilic magnetic microspheres consisting of styrene and poly(ethylene oxide) macromonomer(MPEO) were prepared by dispersion copolymerization in the presence of Fe3O4 magnetic fluid in an ethanol/water medium. The sizes of the magnetic microspheres and their distribution were characterized by means of scanning electron microscopy(SEM). The surface morphology and the average surface roughness of the microspheres were investigated by virtue of atomic force microscopy(AFM). It was found that the microspheres exhibit microscopic phase-separate and the mean square surface roughness of the microspheres increases with increasing MPEO used in the copolymerization. The amphiphilic magnetic microspheres containing 0.4-3.5 mg/g hydroxyl groups could be prepared from MPEO with different concentrations and styrene.

Key words: Amphiphilic magnetic polymer, Microsphere, Copolymerization