| Fe3O4-PMMA复合纳米微球的制备与表征 |
| |
| 引用本文： | 吴艳雪,徐敏,何雅琴,戴明欣,张幼维,赵炯心.Fe3O4-PMMA复合纳米微球的制备与表征[J].医学教育探索,2012,25(3). |
| |
| 作者姓名： | 吴艳雪 徐敏 何雅琴 戴明欣 张幼维 赵炯心 |
| |
| 作者单位： | 东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620;东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620;东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620;东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620;东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620;东华大学材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620 |
| |
| 基金项目： | 国家自然科学基金面上项目（21074020）；中央高校基本科研业务费专项资金资助（12D10607） |
| |
| 摘 要： | 采用化学共沉淀法合成了超顺磁Fe3O4纳米粒子,并采用油酸和油酸钠对其表面进行修饰，制备了可稳定分散于水中的磁流体。以该磁流体为种子，通过一步乳液聚合制备了表面带有功能化羧基的Fe3O4-聚甲基丙烯酸甲酯复合纳米微球(Fe3O4-PMMA)。利用动态光散射、透射电镜观察、傅里叶红外光谱、热失重分析、振动样品磁强计测试等手段表征了复合微球的尺寸、形态、结构、组成和磁性能。结果表明，复合微球的平均直径约120 nm，表面带有羧基功能基团，在室温下具有超顺磁性和较高的饱和磁化强度。
|
| 关 键 词： | Fe3O4纳米粒子 甲基丙烯酸甲酯 乳液聚合 磁性复合纳米微球 |
| 收稿时间： | 2012/5/18 0:00:00 |
Preparation and Characterization of Fe3O4-PMMA Composite Nanospheres |
| |
| WU Yan-xue,XU Min,HE Ya-qin,DAI Ming-xin,ZHANG You-wei and ZHAO Jiong-xin.Preparation and Characterization of Fe3O4-PMMA Composite Nanospheres[J].Researches in Medical Education,2012,25(3). |
| |
| Authors: | WU Yan-xue XU Min HE Ya-qin DAI Ming-xin ZHANG You-wei and ZHAO Jiong-xin |
| |
| Institution: | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China |
| |
| Abstract: | Superparamagnetic Fe3O4 nanoparticles were first synthesized by chemical co-precipitation method. Then, the surfaces of Fe3O4 nanoparticles were successively modified with oleic acid and sodium oleate to obtain stable magnetic fluid in water. Finally, Fe3O4-poly(methyl methacrylate) (PMMA) composite nanospheres bearing carboxylic functional group on the surface, were faciely prepared by one-step emulsion polymerization in the presence of the magnetic fluid. Dynamic light scattering, transmission electron microscopy, Fourier transform infrared spectroscopy, thermogravimetry and vibrating sample magnetometer measurements were used to characterize the size, morphology, structure, composition and magnetic property of the composite nanospheres, respectively. Results show that the obtained composite nanospheres were of an average diameter of about 122 nm and with carboxylic functional groups on their surfaces. Also, they were superparamagnetic and with a fairly high saturation magnetization at room temperature. |
| |
| Keywords: | |
|
| 点击此处可从《医学教育探索》浏览原始摘要信息 |
| 点击此处可从《医学教育探索》下载免费的PDF全文 |
|
