Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (21): 2495-2499. Previous Articles     Next Articles

Full Papers

多孔磁性明胶微球的制备与结构表征

袁俊杰*     杨正龙   

  1. (同济大学材料科学与工程学院 上海 200092)
  • 投稿日期:2008-11-15 修回日期:2009-06-18 发布日期:2009-07-08
  • 通讯作者: 袁俊杰 E-mail:yjjiris@126.com

Preparation and Characterization of Porous Magnetic Gelatin Microspheres

Yuan, Junjie*       Yang, Zhenglong   

  1. (School of Materials Science& Engineering, Tongji University, Shanghai 200092)
  • Received:2008-11-15 Revised:2009-06-18 Published:2009-07-08

The porous magnetic gelatin microspheres were prepared as follows: firstly, the magnetic gelatin microspheres were obtained by an emulsion method and then tetraethyl orthosilicate (TEOS) was directly added into the emulsion system under vigorous stirring. The morphologies of the microspheres were observed by SEM and TEM. The structure and properties of the microspheres were characterized by FT-IR, TGA and VSM. The results showed that the silica was intermingled into the magnetic gelatin microspheres. The TEOS acted as a cross-linking hardening agent in the system. The results illustrated that the oxidation speed of the magnetic nanoparticles in the porous magnetic gelatin microspheres was slower than that in the magnetic gelatin microspheres. The porous magnetic gelatin microspheres displayed ferromagnetism properties.

Key words: emulsion method, porous, gelatin, silica