摘要
以马来酸酐和2,6-二氨基吡啶反应得到的产物N-(6-氨基-2-吡啶基)马来酰胺酸作为功能基单体,与乙二醇二甲基丙烯酸酯(EGDMA)、聚乙二醇4000在引发剂偶氮二异丁腈(AIBN)存在下进行无皂乳液共聚合反应包裹磁性Fe3O4,制备了表面同时具有羧基和氨基的双官能化高分子复合磁性微球。采用扫描电镜、红外光谱等技术对所得材料进行了表征。考察了聚合温度、引发剂种类、反应时间、原料配比等参数对聚合物包裹磁性Fe3O4的影响。以AIBN为引发剂,Fe3O4、单体、交联剂比例为1︰1︰5,聚合反应时间6 h所得的复合磁性微粒具有较好的形貌、磁响应性能和94.3%的包裹率。
N-（6-amino-2-pyridinyl）maleinaniu acid was synthesized by using maleic anhydride and 2,6-diaminopyridine as raw materials. The obtained functional monomer which contains both carboxyl and amine groups was then copolymerized with ethyleneglycoldimethacrylate （EGDMA） and polyethylene glycol-4000 in the presence of magnetic Fe3O4 nanoparticles as shell material. And the composite microspheres containing both carboxyl and amine were then prepared. The obtained magnetic composite microsphere was characterized by IR and SEM. Some factors which influenced the material properties and coating ratio were investigated including temperature, initiator, reaction time, ratio of raw materials. The results showed that the present magnetic particles had favorable diameter, magnetic property and 94.3% magnetic coating ratio in the conditions of AIBN as initiator. The optimal ratio of raw materials was found to be 1：1：5 as Fe3O4, monomer and cross-linker in sequence.
出处
《合成材料老化与应用》
2015年第2期28-31,89,共5页
Synthetic Materials Aging and Application
基金
陕西省教育厅科学研究计划及基地项目(No:14JK2132)
西安市科技计划项目(CXY1352WL06)
关键词
磁性高分子微球
FE3O4
双官能化
聚合包裹
magnetic polymer microsparticles, Fe3O4, bifunetionalization, polymerization coating
