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A novel approach to preparing magnetic protein microspheres with core-shell structure |
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| Authors: | Wei Jiang Zhendong SunFengsheng Li Kai ChenTianyu Liu Jialing LiuTianle Zhou Rui Guo |
| Affiliation: | a National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, PR China b Department of Physics, Nanjing University of Science and Technology, Nanjing 210094, PR China c Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China d Department of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China |
| Abstract: | Magnetic protein microspheres with core-shell structure were prepared through a novel approach based on the sonochemical method and the emulsion solvent evaporation method. The microspheres are composed of the oleic acid and undecylenic acid modified Fe3O4 cores and coated with globular bovine serum albumin (BSA). Under an optimized condition, up to 57.8 wt% of approximately 10 nm superparamagnetic Fe3O4 nanoparticles could be uniformly encapsulated into the BSA microspheres with the diameter of approximately 160 nm and the high saturation magnetization of 38.5 emu/g, besides of the abundant functional groups. The possible formation mechanism of magnetic microspheres was discussed in detail. |
| Keywords: | Magnetic protein microsphere Solvent evaporation method Sonochemical method Magnetic nanoparticle Ferrofluid |
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