Preparation and characterization of PS/pAPBA core-shell microspheres

Abstract

Polystyrene microspheres with an average diameter of 55 μm were prepared by suspension polymerization via oxidation of the monomer by ammonium persulfate. Poly-3-aminophenylboronic acid was grafted onto the surfaces of the polystyrene microspheres to form polystyrene/poly-3-aminophenylboronic acid core- shell micospheres. The samples were characterized by scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and nitrogen adsorption/desorption method. The results show that poly-3-aminophenylboronic acid was successfully grafted to the surfaces of the polystyrene microspheres by aromatic ring electron-pairing interaction. The surfaces of the core-shell microspheres possessed a porous structure, with the average pore diameter of 30.2 nm and the BET surface area of 193.26 m²/g.

Keywords

polystyrene / poly-3-aminophenylboronic acid / core-shell microspheres / structure characterization

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Acknowledgements

The authors are grateful to the National Natural Science Foundation of China (No. 20673034) and the Research Fund for the Doctoral Program of Higher Education of China (No. 20060476001) for their financial supports.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg