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.
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(HZ2O) ratio, molar ratio of Ac to St on the preparation have been investigated.
出处
《应用化学》
CAS
CSCD
北大核心
1999年第6期46-49,共4页
Chinese Journal of Applied Chemistry
基金
内蒙古自然科学基金
关键词
磁性氧化铁
四氧化三铁
醛基
微米级
磁性微球
magnetic iron oxide, nanosize magnetic particle, styrene-acrolein copolymer,Preparation
