writer：Hepeng Zhang, Qiuyu Zhang*, Baoliang Zhang, Hailong Xu and Xinlong Fan
keywords：asymmetric composite microspheres;surface-modified magnetic particles;mini-emulsion polymerization;Fe3O4
source：期刊
specific source：Polymer International
Issue time：2012年

Novel inner asymmetric composite microspheres were prepared by encapsulating surface-modified magnetic particles via mini-emulsion polymerization. Most of the surface-modified magnetic particles encapsulated into the polymer matrix aggregate in one side of each microsphere, while only a few particles randomly disperse in the remaining part. The magnetic content of these novel asymmetric composite microspheres is 46.7% and the saturation magnetization is 23.8 emu g^?1. 

http://onlinelibrary.wiley.com/doi/10.1002/pi.4170/full