磁性聚苯乙烯微球的合成和特性  

STUDIES ON MAGNETIC POLYMER MICROSPHERES PREPARATION AND CHARACTERIZATION

作　　者：邱广明[1] 章贤明[1] 孙宗华[1] 

机构地区：[1]中国科学院成都有机化学研究所,成都610015

出　　处：《高分子材料科学与工程》1993年第2期38-43,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金

摘　　要：本文报导了磁性聚苯乙烯微球的合成和特性。采用改进了的乳液聚合法,在磁流体存在下进行苯乙烯、二乙烯基苯和丙烯酸的三元共聚,可得到含0.067％Fe_3O_4、平均拄径为0.06～0.7μm的磁性聚苯乙烯微球。该微球外观呈球形,内部为多相构造,可在磁场下被分离出来。微球粒径分布窄,具有良好的机械稳定性和耐酸性。实验表明,引发剂和乳化剂用量减少,微球粒径增大;分散介质中乙醇含量对磁性聚苯乙烯微球的形成有很大影响,增加乙醇含量可使微球粒径达到1mm。The paper reported synthesis and characterization of magnetic polystyrene microspheres. The magnetic polymer microspheres, containing 0. 067 % FeaO4 and having 0. 06 - 0. 7 um mean diameter, were synthesized, in the presence of magnetic fluid, by the improved emulsion polymerization of styrene. It has a spherical apperance and the internal construction of multi-phases. The magnetic polymer microspheres can be separated by magnetic field. The microspheres have narrow distribution of diameter, excellent mechanical stability and acid-resistivity. Experiments have indicated that, the less initiator and emulsif ier, the larger microsphere diameter 5 the ethanol content in dispersion media had a great effect on formation of magnetic polystyrene microspheres, increasing ethanol content could make the microsphere diameter reach 1 mm.

关 键 词：磁性微球 聚苯乙烯 乳液聚合 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]