| 热疗用葡聚糖磁流体的制备及表征 |
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| 引用本文： | 翟羽,王煦漫,王晓亮,古宏晨. 热疗用葡聚糖磁流体的制备及表征[J]. 化学世界, 2006, 47(4): 193-195,214 |
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| 作者姓名： | 翟羽 王煦漫 王晓亮 古宏晨 |
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| 作者单位： | 上海交通大学,微纳科学技术研究院,上海,200030;上海交通大学,微纳科学技术研究院,上海,200030;上海交通大学,微纳科学技术研究院,上海,200030;上海交通大学,微纳科学技术研究院,上海,200030 |
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| 基金项目： | 国家科技攻关项目;上海市纳米科技专项基金 |
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| 摘 要： | 用化学共沉淀法,以不同浓度的葡聚糖40000和20000水溶液作为分散剂,制备纳米铁氧体磁流体。铁氧体粒子的平均直径为15 nm左右,其分散主要依靠空间位阻作用维持。葡聚糖磁流体中铁氧体粒子与葡聚糖以氢键、范德华力结合,葡聚糖包覆量约为8%。随葡聚糖相对分子质量和浓度的升高,磁流体(2.45%)的稳定性上升,用50%葡聚糖40000水溶液制备的磁流体,在室温静置72 h以上,没有分层现象。
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| 关 键 词： | 磁流体 葡聚糖 制备 表征 |
| 文章编号： | 0367-6358（2006）04-193-03 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2005-11-222006-02-10 |
Preparation and Properties of Water-based Dextran-coated Magnetic Fluid for Hyperthermia |
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| ZHAI Yu,WANG Xu-man,WANG Xiao-liang,GU Hong-chen. Preparation and Properties of Water-based Dextran-coated Magnetic Fluid for Hyperthermia[J]. Chemical World, 2006, 47(4): 193-195,214 |
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| Authors: | ZHAI Yu WANG Xu-man WANG Xiao-liang GU Hong-chen |
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| Affiliation: | Research Institute of Micro/nanometer Science and Technology, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | Water-based magnetic fluids were prepared by co-precipitation method using dextran 40000 and 20000 solutions of different concentrations as coating agent.The average size of ferrite particles was about 15 nm.The dispersal of particles was obtained due to steric hindrance.Dextran was coated on ferrite particles through hydrogen bond and van der Waals force,and the proportion of coated dextran was about 8%.The stability of fluids(2.45%) was increased with increasing molecular weight and concentration of dextran.As for the fluid coated with 50% dextran 40000,no stratification appeared after placing at room temperature more than 72 h. |
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| Keywords: | magnetic fluid dextran preparation property |
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