P(St-GMA-DVB)/Fe_3O_4高分子磁性微球的合成与表征  

Synthesis and Characterization of Oil-based Fe_3O_4 Magnetic Fluid and P(St-GMA-DVB) Polymer Magnetic Microspheres

作　　者：张小强[1] 李嵘[1] 周鑫[1] 谭天伟[1] 

机构地区：[1]北京市生物加工过程重点实验室,北京化工大学,北京100029

出　　处：《过程工程学报》2009年第4期824-828,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:20636010;20876011);国家重点基础研究发展规划(973)基金资助项目(编号:2007CB714305);国家高技术研究发展计划(863)基金资助项目(编号:2006AA02Z245;2007AA100404);北京市科技计划基金资助项目(编号:D0205004040211)

摘　　要：以FeCl3·6H2O和FeCl2·4H2O为原料,采用化学共沉淀法制备了Fe3O4油基磁流体,设计的合成工艺克服了合成磁流体过程中Fe3O4磁性粒子易团聚的缺点,合成了具有很好分散性和稳定性的磁流体,比饱和磁化强度达72.60emu/g.采用悬浮聚合方法合成了聚苯乙烯-甲基丙烯酸缩水甘油酯-二乙烯基苯[P(St-GMA-DVB)]高分子磁性微球,搅拌转速对磁性微球粒径影响大,磁性微球粒径在55～300μm范围内,外形为具有单分散性的球形,表面环氧基团含量达17μmol/g.Oil-based Fe3O4 magnetic fluid was prepared using FeCl3·6H2O and FeCl2·4H2O by chemical coprecipitation method and the process route was chosen to overcome the agglomeration difficulty of magnetic particles in the synthesis process of Fe3O4 magnetic fluid.The magnetic fluid had good dispersion and stability,and its saturation magnetization was up to 72.60 emu/g.P（St-GMA-DVB） polymer magnetic microspheres were synthesized by suspension polymerization method.The stirring speed had greater impact on magnetic microsphere particle size,and the magnetic microsphere particles were in the range of 55～300 μm.The appearance of magnetic microsphere was monodisperse spherical,and the content of epoxide could be achieved 17 μmol/g.

关 键 词：化学共沉淀 油基磁流体 悬浮聚合 高分子磁性微球 

分 类 号：TB34[一般工业技术—材料科学与工程]