Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (18): 1930-1934. Previous Articles    




  1. (上海工程技术大学化学化工学院 上海 201620)
  • 投稿日期:2009-12-10 修回日期:2010-04-14 发布日期:2010-05-19
  • 通讯作者: 刘宏波
  • 基金资助:


Preparation of Fe3O4@P(St-GMA) Magnetic Microspheres by Soap-free Emulsion Polymerization

LIU Hong-Bo, WEN Shao-Guo, WANG Ji-Hu, XU Zheng-Xu, CHEN Wei-Zu, CHEN Yuan, ZHENG Peng-Peng   

  1. (School of Chemistry & Chemical Engineering, Shanghai Univeristy of Engineering Science, Shanghai 201620)
  • Received:2009-12-10 Revised:2010-04-14 Published:2010-05-19

Magnetic iron oxide nanoparticles were prepared by chemical coprecipitation of ferrous and ferric salts in the alkaline medium, and water-dispersed magnetic fluids were achieved by dispersing the nanoparticles into the aqua ammonia solution of oleic acid, then magnetic Fe3O4@P(St-GMA) microspheres were achieved by soap-free emulsion polymerization of styrene and glycidyl methacrylate in the presence of magnetic fluids. The effecting factors to the fractional conversion of polymerization such as styrene content, ferrofluid content, initiator content and temperature, were examined in detail. To confirm the iron oxide nanoparticles were encapsulated by P(St-GMA), one sample selected was characterized by TEM, TGA and VSM.

Key words: chemical coprecipitation, soap-free emulsion co-polymerization, conversion, magnetic fluids, magnetic microspheres