Preparation and characterization of superparamagnetic functional polymeric microparticles--颗粒学报PARTICUOLOGY

Liu, X., Liu, H., Xing, J., Guan, Y., Ma, Z., Shan, G., & Yang, C. (2003). Preparation and characterization of superparamagnetic functional polymeric microparticles. China Particuology, 1(2), 76-79. https://doi.org/10.1016/S1672-2515(07)60112-2

Preparation and characterization of superparamagnetic functional polymeric microparticles

Xianqiao Liu, Huizhou Liu ^*, Jianmin Xing, Yueping Guan, Zhiya Ma, Guobin Shan, Chengli Yang

Laboratory of Separation Science and Engineering and State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China

10.1016/S1672-2515(07)60112-2

Volume 1, Issue 2, June 2003, Pages 76-79

Received 22 January 2003, Accepted 17 March 2003, Available online 27 November 2007.

E-mail: hzliu@home.ipe.ac.cn

Highlights

Abstract

Superparamagnetic poly(styrene-divinylbenzene-glycidyl methacrylate) (Pst-DVB-GMA) microparticles were prepared via a modified suspension polymerization process. A magnetic fluid was first prepared by a chemical co-precipitation method. Then magnetic microparticles were produced by mixing the monomers and the magnetic fluid with water in the presence of a stabilizer poly(vinyl pyrrolidone) (PVP) to form a suspension, and finally benzoyl peroxide was added to initiate the co-polymerization. The morphology and magnetic properties of the microparticles were examined by TEM and VSM. The spherically shaped microparticles, with a size range of 4 to 7 μm, showed distinct superparamagnetic characteristics. XRD was used to investigate the structure of the magnetite particles dispersed in the polymer matrix. The microparticles with epoxy groups on their surface can be applied directly to the separation of biomolecules.

Graphical abstract

Keywords

preparation; characterization; magnetic fluid; Pst-DVB-GMA; suspension polymerization

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