引用本文:
邱广明. 微米级Fe3O4/P(St-Ac)磁性微球的合成[J]. 应用化学,
1999, 16(6): 46-49.
Citation: Qiu Guangming. Synthesis of Nanosize Magnetic Microspheres from Fe3O4 and Poly(styrene-acrolein)[J]. Chinese Journal of Applied Chemistry, 1999, 16(6): 46-49.
Citation: Qiu Guangming. Synthesis of Nanosize Magnetic Microspheres from Fe3O4 and Poly(styrene-acrolein)[J]. Chinese Journal of Applied Chemistry, 1999, 16(6): 46-49.
微米级Fe3O4/P(St-Ac)磁性微球的合成
摘要:
苯乙烯和丙烯醛在磁性氧化铁(Fe3O4)粒子的醇-水分散体系中进行共聚反应,制得表面带醛基、内含磁性氧化铁的反应性磁性聚合物微球微球粒径1~5μm、表面醛基量0.9~1.52mmol/g,Fe3O4含量0.9~10.0mg/g.磁性种子(Fe3O4)、丙烯醛和苯乙烯的摩尔比、引发剂及醇/水体积比对聚合行为和磁性微球的特性有很大的影响.
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关键词:
- Fe3O4
- / 微米级磁性微球
- / 苯乙烯-丙烯醛共聚物
- / 制备
English
Synthesis of Nanosize Magnetic Microspheres from Fe3O4 and Poly(styrene-acrolein)
Abstract:
The reactive magnetic microspheres with magnetic core and aldehyde groups on surface were prepared by copolymerization of styrene(St) and acrolein(Ac) in an alcohol/water dispersion medium in the presence of magnetite(Fe3O4) particles wrapped up in polyethylene glycol.The composite microspheres have diameters of 1-5μm, with surface aldehyde groups of 0.9-1.52 mmol/g and Fe3O4 content of 0.9-10.0 mg/g.They showed better magnetic responsibility and excellent monodispersity.The effects of the content of magnetite particle, comonomer, initiator and V(EtOH)/V(H2O) ratio, molar ratio of Ac to St on the preparation have been investigated.
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