A facile route to synthesize porous ethyl cellulose spheres loaded with superparamagnetic iron oxide nanoparticles

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• 作者：Hui Yang ; Yuan Xie ; Daxin Han ; Wenqi Mao ; Weiwei Cai…
• 关键词：Ethyl cellulose (EC) ; Porous spheres ; Emulsion ; Magnetic property ; Phase separation
• 刊名：Colloid & Polymer Science
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：293
• 期：7
• 页码：1915-1922
• 全文大小：4,196 KB
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• 作者单位：Hui Yang (1)
  Yuan Xie (1)
  Daxin Han (1)
  Wenqi Mao (1)
  Weiwei Cai (1)
  Xingzhong Guo (1)
  
  1. School of Materials Science and Engineering of Zhejiang University, Hangzhou, 310027, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Physical Chemistry
  Soft Matter and Complex Fluids
  Characterization and Evaluation Materials
  Food Science
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-1536

文摘

Ethyl cellulose porous spheres (ECPSs) loaded with superparamagnetic iron oxide nanoparticles (SPIONs) have been successfully synthesized via a physical method in oil-in-water (O/W) emulsion. The as-prepared ECPSs possess open pores in the shell and interconnected pores inside the spheres by means of phase separation. The SPIONs with an average size of around 5?nm synthesized by co-precipitation method are added into oil phase precursor in the preparation of ECPSs to synthesize the ECPSs-SPIONs. The loading of SPIONs does not change the morphology of ECPSs, while endows the ECPSs with high ferromagnetic properties at room temperature. The resultant ECPSs-SPIONs can be easily separated from dispersion liquid or driven to specific sites under an external magnet.