| PEI包覆磁性Fe_3O_4纳米颗粒的制备及性能研究 |
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| 引用本文： | 李成魁,严彪,杜春风,赵慎强. PEI包覆磁性Fe_3O_4纳米颗粒的制备及性能研究[J]. 金属功能材料, 2010, 17(4): 41-44 |
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| 作者姓名： | 李成魁 严彪 杜春风 赵慎强 |
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| 作者单位： | 1. 同济大学,材料科学与工程学院,上海,200092
2. 上海市金属功能材料开发应用重点实验室,上海,200092 |
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| 摘 要： | 由于PEI/Fe3O4磁流体具有良好的生物兼容性,因而被广泛应用于生物医药领域。本实验用共沉淀法制备出磁性Fe3O4纳米颗粒,通过一次包覆改性法将PEI（聚乙烯亚胺）包覆在磁性Fe3O4纳米颗粒上。利用X-射线衍射仪（XRD）、透射电子显微镜（TEM）、红外光谱仪（FTIR）、振动样品磁强计（VSM）、热重分析仪（TG）等方法对其进行了表征。结果表明,实验制备出颗粒度为10nm左右的颗粒,PEI较好的吸附在其表面,吸附率为33.6%,颗粒度饱和磁化强度为58.05 emu/g,包覆后有所降低,但较好保持着原有磁性。
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| 关 键 词： | Fe3O4 PEI 共沉淀法 磁流体 |
Synthesis and Property Analysis of PEI-coated Fe3O4 Nanoparticles |
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| LI Cheng-kui,YAN Biao,DU Chun-feng,ZHAO Sheng-qiang. Synthesis and Property Analysis of PEI-coated Fe3O4 Nanoparticles[J]. Metallic Functional Materials, 2010, 17(4): 41-44 |
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| Authors: | LI Cheng-kui YAN Biao DU Chun-feng ZHAO Sheng-qiang |
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| Affiliation: | LI Cheng-kui,YAN Biao,DU Chun-feng,ZHAO Sheng-qiang(School of Materials Science and Engineering,Tongji University,Shanghai 200092,China; Shanghai Key Lab.of D＆A for Metal-Functional Materials,Shanghai 200092,China) |
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| Abstract: | PEI/Fe3O4 magnetic fluid is widely used in bio-medicine due to its good biological compatibility.In this experiment,the magnetic Fe3O4 nanoparticles is prepared with the co-precipitation method.The PEI（polyethylenimine） is coated by one time modifying.The particles are characterized with XRD,TEM,FTIR,VSM,TG.The results reveal that： the size of particles is about 10 nm;PEI is well coated on the surface of particles with a rate of 33.6%;The saturation magnetization is 58.05 emu/g,a little lower than those uncoated,that well keeps the magnetic property. |
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| Keywords: | Fe3O4 PEI |
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