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林产化学与工业 ›› 2015, Vol. 35 ›› Issue (5): 37-44.doi: 10.3969/j.issn.0253-2417.2015.05.007

• 研究报告 • 上一篇    下一篇

含松香的聚苯乙烯/Fe3O4磁性微球的制备与表征

余彩莉1, 任鹏1, 王孝磊1, 陈传伟1, 张发爱2   

  1. 1. 桂林理工大学 化学与生物工程学院, 广西 桂林 541004;
    2. 桂林理工大学 材料科学与工程学院, 广西 桂林 541004
  • 收稿日期:2014-08-30 出版日期:2015-10-25 发布日期:2015-10-24
  • 通讯作者: 张发爱(1964—),男,甘肃武威人,教授,博士,博士生导师,从事聚合物纳米复合材料和天然产物化学研究;E-mail:zhangfaai@163.com E-mail:zhangfaai@163.com
  • 作者简介:余彩莉(1965—),女,甘肃兰州人,教授,硕士生导师,从事天然产物化学研究
  • 基金资助:
    国家自然科学基金资助项目(31160148);广西自然科学基金重点项目(2012GXNSFDA053006)

Preparation and Characterization of Magnetic Polystyrene/Fe3O4 Microspheres with Rosin Moiety

YU Cai-li1, REN Peng1, WANG Xiao-lei1, CHEN Chuan-wei1, ZHANG Fa-ai2   

  1. 1. College of Chemical and Biology Engineering, Guilin University of Technology, Guilin 541004, China;
    2. College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • Received:2014-08-30 Online:2015-10-25 Published:2015-10-24

摘要: 以松香与甲基丙烯酸-2-羟乙酯反应得到酯化物(RH)为聚合单体,代替部分苯乙烯(St),二乙烯基苯(DVB)为交联剂,明胶作分散剂,偶氮二异丁腈为引发剂,采用悬浮聚合法在油酸改性Fe3O4的存在下制备了磁性聚合物微球,并研究了油酸改性Fe3O4的用量对微球性能的影响。采用红外光谱、热重分析、X射线衍射分析、光学显微镜、扫描电镜、透射电镜、X射线光电子能谱等方法对微球进行结构表征,通过磁性测量系统测试了微球的磁滞回线。结果表明:在单体配比m(RH):m(St):m(DVB)=1:1.5:0.4,引发剂和分散剂用量分别为单体总量的1%和6%,制备的含松香的磁性聚合物微球球形好、磁性强,微球具有顺磁性。当油酸改性Fe3O4的用量增大时,微球颗粒粒径逐渐增大,粒径分布变宽,饱和磁强度增大。

关键词: 松香, 磁性聚合物微球, 四氧化三铁, 悬浮聚合

Abstract: Rosin was reacted with 2-hydroxyethyl methacrylate and an ester (denoted as RH) was formed. Then polymerization was carried out in the presence of oleic acid-modified Fe3O4 magnetic fluid, with RH and styrene (St) as monomers, divinylbenzene (DVB) as cross-linking monomer, gelatin as dispersant, 2,2-azobisiso-butyronitrile (AIBN) as initiator. The magnetic polymer microspheres with rosin moiety were prepared by suspension polymerization and the effect of the magnetic fluid content on the magnetic polymer microspheres was investigated. The structures and properties of the magnetic polymer microspheres were characterized by Fourier transform-infrared spectroscopy, thermogravimetry, X-ray powder diffraction, optical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectrometer. Hysteresis loops of the microspheres were tested by magnetic measuring system. The results indicated that at a monomer ratio of m(RH):m(St):m(DVB)=1:1.5:0.4, and the amounts of AIBN and gelatin about 1% and 6% of the total monomers, respectively, the products were spherical with high superparamagnetism. When the amount of oleic acid-modified Fe3O4 increased, the particle sizes of microspheres were gradually increased, the particle size distribution was broadened, and the saturation magnetic intensity increased.

Key words: rosin, magnetic polymer microspheres, ferroferric oxide, suspension polymerization

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