Preparation of magnetic polystyrene microspheres with a narrow size distribution
文献类型：会议论文
| 作者 | Yang, Chengli1,2; Guan, Yueping1; Xing, Jianmin1; Liu, Junguo1; Shan, Guobin1; An, Zhentao1; Liu, Huizhou1 |
| 出版日期 | 2005-07-01 |
| 关键词 | Magnetometers - Morphology - Polymerization - Scanning electron microscopy - Superparamagnetism - Suspensions (fluids) |
| 卷号 | 51 |
| 期号 | 7 |
| DOI | 10.1002/aic.10467 |
| 页码 | 2011-2015 |
| 英文摘要 | A spraying suspension polymerization process for preparation of magnetic polystyrene microspheres with a narrow size distribution was proposed. The magnetite (Fe3O4) nanoparticles with hydrophobia shell were first prepared by a modified chemical coprecipitation method. Then the oil solution, composed of monomer styrene, crosslinker divinylbenzene, Fe 3O4 nanoparticles, and initiator benzoyl peroxide, was sprayed into the poly(vinyl alcohol) aqueous solution by a pressure of nitrogen gas to form droplets. Finally, the droplets would be polymerized rapidly to magnetic polystyrene microspheres at the polymerization temperature. The morphology and magnetic properties of microspheres were examined using a scanning electron microscope and a vibrating sample magnetometer. The results showed that the magnetic microspheres had a narrow size distribution with mean diameter of around 10 pm and smooth surface, and the magnetic microspheres with saturation magnetization of 15.6 emu/g exhibited distinct superparamagnetic characteristics. Powder X-ray diffraction was used to investigate the structure of the magnetite nanoparticles dispersed in the polystyrene matrix. 漏 2005 American Institute of Chemical Engineers. |
| 资助机构 | John Wiley and Sons Inc. |
| 学科主题 | Polystyrenes |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59587]  |
| 作者单位 | 1.Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China 2.Graduate School, Chinese Academy of Sciences, Beijing 100080, China |
| 推荐引用方式 GB/T 7714 | Yang, Chengli,Guan, Yueping,Xing, Jianmin,et al. Preparation of magnetic polystyrene microspheres with a narrow size distribution[C]. 见:. |
入库方式： OAI收割
来源：过程工程研究所
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