高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 920.

• 论文 • 上一篇    下一篇

反相微乳液合成30~100nm磁性聚合物纳米微球

邓勇辉1, 王雷1, 杨武利1, 府寿宽1, Elaissari Abdelhamid2   

  1. 1. 复旦大学高分子科学系, 教育部聚合物分子工程重点实验室, 上海 200433;
    2. 里昂高等师范学院法国国家科学院-BioMeieux公司, 法国里昂 69364
  • 收稿日期:2001-12-30 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 府寿宽(1940年出生),男,教授,博士生导师,从事乳液聚合及功能高分子研究.E-mail:skfu@srcap.stc.sh.cn E-mail:skfu@srcap.stc.sh.cn
  • 基金资助:

    国家自然科学基金(批准号:29874010)

Synthesis of 30-100 nm Nanoscale Magnetic Polymer Particles in Inverse Microemulsion

DENG Yong-Hui1, WANG Lei1, YANG Wu-Li1, FU Shou-Kuan1, Elaissary Abdelhamid2   

  1. 1. Key Laboratory of Polymer Molecular Engineering of Education Ministry, Department of Macromolecular Science.Fudan University, Shanghai 200433, China;
    2. Ecole Normals Superieure de Lyon, Unite mixte CNRS-bioMerieux ENS, Lyon F-69364, France
  • Received:2001-12-30 Online:2003-05-24 Published:2003-05-24

摘要: 利用反相微乳液一步法成功地制备了磁性聚合物纳米微球,微球粒径在30~100nm左右,均一性较好,研究表明,Fe(Ⅱ)浓度对微乳液和微胶乳的稳定性有很大影响,碱的种类、AOT和单体的含量能控制微球粒径,用振动探针式磁强仪(VSM)测定了不同比例的[Fe(Ⅱ)]/[Fe(Ⅲ)]所合成的聚合物微球的磁性,发现温度对合成高磁饱和强度和超顺磁性起关键作用,合成的磁性聚合物微胶乳透明且稳定性较好.

关键词: 磁性, 聚合物纳米微球, 反相微乳液

Abstract: Aone-step method for the synthesis of magnetic polymer nanoparticles in the inverse mi-croemulsion was investigated. The concentration of Fe(Ⅰ) was found to have a drastic effect on the stability of the microemulsion. The magnetic properties of the obtained composite latex particles prepared at different [Fe(Ⅱ)]/[Fe(Ⅲ)] were measured by Vibrating Sample Magnetometer (VSM) and found temperature was crucial to form high magnetic power and superparamagnetic magnetite. DLSindicated a relatively uniform particle diameter about 30-100 nm and the particle size was controlled by the type of alkali, the amount of AOTor monomer. The method is simple, easily controlled, and applicable to various hy-drophilic monomers and the prepared magnetic polymer particles are transparent and stable for several months.

Key words: Magnetic property, Polymeric nanoparticle, Inverse microemulsion

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