高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (5): 1080-1085.doi: 10.7503/cjcu20131296

• 高分子化学 • 上一篇    下一篇

PS-b-P2VP/Fe3O4纳米复合材料的制备与表征

张志杰, 龚江, 谭海英, 姚坤, 唐涛()   

  1. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022
  • 收稿日期:2014-01-02 出版日期:2014-05-10 发布日期:2014-03-06
  • 作者简介:联系人简介: 唐 涛, 男, 博士, 研究员, 博士生导师, 主要从事高分子化学与材料研究. E-mail:ttang@ciac.ac.cn
  • 基金资助:
    国家自然科学基金(批准号: 51233005, 51073149)资助

Preparation and Characterization of PS-b-P2VP/Fe3O4 Nanocomposites

ZHANG Zhijie, GONG Jiang, TAN Haiying, YAO Kun, TANG Tao*()   

  1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Science, Changchun 130022, China
  • Received:2014-01-02 Online:2014-05-10 Published:2014-03-06
  • Contact: TANG Tao E-mail:ttang@ciac.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51233005, 51073149)

摘要:

采用油酸表面改性的粒径均一的Fe3O4磁性纳米粒子(OA-Fe3O4)与具有微相分离结构的聚苯乙烯-b-聚2-乙烯基吡啶(PS-b-P2VP)嵌段共聚物通过溶液共混, 得到具有超顺磁性的PS-b-P2VP/Fe3O4纳米复合材料. 结果表明, 在OA-Fe3O4质量分数为1%, 3%, 5%和10%时, 纳米粒子分散在PS相区; 但OA-Fe3O4含量为8%时, 纳米粒子在嵌段聚合物基体中的分散状态发生突变, 形成大尺寸聚集体并分散在整个基体中, 此时复合材料的流变行为发生相应变化.

关键词: Fe3O4磁性纳米粒子, 聚苯乙烯-b-聚2-乙烯基吡啶嵌段共聚物, 纳米复合材料, 分散状态

Abstract:

Oleic acid modified Fe3O4 nanoparticles(OA-Fe3O4) with uniform particle size were blended with polystyrene-b-poly(2-vinyl pyridine)(PS-b-P2VP) that had micro-phase separation structure using solution-mixing method. The resultant PS-b-P2VP/Fe3O4 nanocomposites were superparamagnetic. The results showed that OA-Fe3O4 nanoparticles were dispersed in the PS phase of PS-b-P2VP, when the mass fraction of OA-Fe3O4 was 1%, 3%, 5% and 10%. However, when the content of OA-Fe3O4 was 8%, the dispersion of OA-Fe3O4 particles in the PS-b-P2VP matrix changed dramatically. In this case, the nanoparticles formed large aggregates, which were dispersed across PS-b-P2VP matrix. Meanwhile the rheological properties of PS-b-P2VP/Fe3O4 nanocomposites also changed.

Key words: Fe3O4 magnetic nanoparticles, PS-b-P2VP block copolymer, Nanocomposite, Dispersion state

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