高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

表面引发原子转移自由基聚合方法合成Fe3O4/PMMA复合纳米微粒

安丽娟1, 2; 李兆强1; 王燕萍1; 杨柏1   

  1. 1. 吉林大学超分子结构与材料教育部重点实验室, 化学学院, 长春 130012;
    2. 天津科技大学理学院, 天津 300222
  • 收稿日期:2005-02-25 修回日期:1900-01-01 出版日期:2006-07-10 发布日期:2006-07-10
  • 通讯作者: 杨柏

Synthesis of Fe3O4/PMMA Nanocomposite Particles by Surface-Initiated ATRP and Characterization

AN Li-Juan1,2; LI Zhao-Qiang1; WANG Yan-Ping1; YANG Bai1*   

  1. 1. Key Lab for Supramolecular Structure and Materials, College of Chemistry,
    Jilin University, Changchun 130023, China;
    2. College of Science, Tianjin University of Science and Technology, Tianjin 300222, China

  • Received:2005-02-25 Revised:1900-01-01 Online:2006-07-10 Published:2006-07-10
  • Contact: YANG Bai

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摘要： 采用表面引发原子转移自由基聚合方法合成了核壳结构的磁性高分子纳米微粒. 作为聚合反应引发剂的3-氯丙酸, 首先与油酸修饰的Fe3O4纳米微粒表面的部分油酸置换, 然后在Fe3O4纳米微粒表面引发甲基丙烯酸甲酯聚合, 合成的纳米复合材料用TEM, FTIR, XRD和DSC表征. 磁性测试结果表明, 所制备的磁性高分子纳米微粒仍具有超顺磁性, 但由于聚合物的存在, 其饱和磁化强度降低.

关键词: Fe3O4纳米微粒, 原子转移自由基聚合, PMMA, 磁性复合纳米微粒

Abstract: This paper described the synthesis of a new Fe3O4/PMMA core-shell nanocomposite particles with magnetism. The modified Fe3O4 nanoparticles were firstly synthesized by ligand exchange with 3-chloropropionic acid as the initiator from oleic acid. And then, PMMA was polymerized by surface-initiated atom transfer radical polymerization(ATRP) on the surface of Fe3O4 nanoparticles. The nanocomposites were characterized by TEM, FTIR, XRD and DSC. The magnetic properties of the Fe3O4 nanoparticles and the Fe3O4/PMMA nanocomposite were also studied. The saturation magnetization of the nanocomposites was reduceded because of the existence of the polymer.

Key words: Fe3O4 nano particles, Atom transfer radical polymarization(ATRP), PMMA, Magnetic nano composite particles

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