Synthesis of cross-linked magnetic
composite microspheres containing carboxyl groups

doi:10.1007/s11458-008-0012-5

Front. Chem. China

2008, Vol. 3

Issue (1) : 81-87 https://doi.org/10.1007/s11458-008-0012-5

Synthesis of cross-linked magnetic composite microspheres containing carboxyl groups

SUN Dan, ZHAO Jili, HAN Zhaorang, SONG Qiang, WANG Ying

College of Chemistry, Jilin University;

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Abstract Fe₃O₄ magnetic nano-particles were prepared by a co-precipitation method and were modified using oleic acid. Then, the cross-linked magnetic composite microspheres containing a carboxyl group were prepared by using an improved emulsion polymerization with divinylbenzene (DVB) as the cross-linking agent. The composite microspheres comprised the Fe₃O₄ magnetic nano-particles as cores and the copolymer of styrene and acrylic acid as shells. The morphology and structure of the composite microsphere were characterized by FT-IR, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS) and so on. The results show that the composite microspheres were well dispersed in emulsion with uniform sizes and carboxyl groups on their surface. They were cross-linked and stable in 1 mol/L of HCl and DMF.

Issue Date: 05 March 2008

Cite this article:

ZHAO Jili,SUN Dan,HAN Zhaorang, et al. Synthesis of cross-linked magnetic composite microspheres containing carboxyl groups[J]. Front. Chem. China, 2008, 3(1): 81-87.

URL:

https://academic.hep.com.cn/fcc/EN/10.1007/s11458-008-0012-5
https://academic.hep.com.cn/fcc/EN/Y2008/V3/I1/81

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