【摘要】 通过选用含有乙烯基的有机硅烷偶联剂对自制的纳米Fe₃O₄进行表面修饰后,采用悬浮聚合法成功制备了单分散磁性高分子复合微球,并重点研究了分散剂浓度、搅拌速度、磁含量等因素对制备的磁性高分子复合微球的影响。结果表明,合适的分散剂浓度和搅拌速度可以获得球径分布良好的磁性高分子复合微球,微球的磁感应强度可以通过改变Fe₃O₄磁性粒子的含量进行调节。更多还原

【Abstract】 Monodisperse magnetic polymer microspheres are successfully prepared by the means of suspension polymerization,a silane coupling agent containing a function of vinyl is used to modify the Fe₃O₄ nanoparticles in the preparation progress.Polymerization conditions as the concentration of dispersant,rotation speed and the content of Fe₃O₄ in each microsphere are discussed.The appropriate concentration of dispersant and rotation speed can help prepare the microspheres with good distribution,and the magnetic intensity of the microspheres could be adjusted by the amount of the added Fe₃O₄ nanoparticles.更多还原