高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (2): 366.

• 研究论文 • 上一篇    下一篇

超顺磁性高分子微球的制备与表征

安丽娟1, 李兆强1, 徐娓2, 陈欣芳3, 杨柏1   

  1. 1. 吉林大学化学学院,超分子结构与材料教育部重点实验室;
    2. 吉林大学化学学院,无机合成与制备化学国家重点实验室;
    3. 吉林大学材料科学与工程学院,长春 130023
  • 收稿日期:2004-01-04 出版日期:2005-02-10 发布日期:2005-02-10
  • 通讯作者: 杨　柏(1962年出生),男,博士,教授,博士生导师,主要从事无机有机纳米复合与组装材料研究.E-mail:yangbai@jlu.edu.cn E-mail:yangbai@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:200340062)资助

Preparation and Characterization of Superparamagnetic Polymer Microspheres

AN Li-Juan1, LI Zhao-Qiang1, XU Wei2, CHEN Xin-Fang3, YANG Bai1   

  1. 1. Key Lab of Supramolecular Structure and Materials, College of Chemistry;
    2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry;
    3. College of Materials and Engineering, Jilin University, Changchun 130023, China
  • Received:2004-01-04 Online:2005-02-10 Published:2005-02-10

PDF (PC)

被引次数

167

摘要： 用化学共沉淀方法制备了Fe3O4纳米微粒,并用油酸(十八烯酸)和十二烷基苯磺酸钠为双层表面活性剂进行表面修饰,制备了稳定的水分散性纳米Fe3O4可聚合磁流体.在Fe3O4磁流体存在下,将苯乙烯与甲基丙烯酸通过乳液聚合方法制备了磁性高分子微球.透射电镜研究表明,Fe3O4微粒的平均粒径在10nm左右,乳液聚合形成的磁性高分子微球的粒径平均约为130nm;用超导量子干涉仪对微粒及高分子微球进行了磁性表征,结果表明,合成的Fe3O4纳米微粒以及磁性高分子微球均具有超顺磁性.同时,还用红外光谱及X射线衍射表征了磁性高分子微球的化学成分和晶体结构.用热失重方法测得磁性高分子微球中磁性物质的含量为23.6%.

关键词: Fe3O4磁流体, 乳液聚合, 磁性高分子微球

Abstract: The magnetic nanoparticles were synthesized by the chemical coprecipitation of ferrous chloride and ferric chloride. The obtained magnetic nanoparticles were coated with double surfactant. The magnetic polymer microspheres were prepared by emulsion polymerization by using styrene and methylacrylic acid as the monomer with the existence of magnetic fluid. TEM, FTIR, XRD, TGA and SQUID were used to characterize the size, component, magnetic percentage and magnetic property of the obtained microspheres. The content of magnetite in microspheres is 23.6%; The average size of magnetic fluid was 10 nm, and that of magnetic microsphere was 130 nm. The magnetic fluid and magnetic microsphere were found to show a superparamagnetic property.

Key words: Fe3O4 magnetic fluid, Emulsion polymerization, Magnetic microsphere

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