摘要
本工作选择马来酸酐和苯乙烯单体在纳米二氧化硅粒子表面进行接枝改性,首先对纳米粒子进行烷基化处理,引入双键,然后引发聚合,使得马来酸酐和苯乙烯与纳米粒子之间形成化学键合。详细研究了各种聚合条件(引发剂浓度、单体加入量的比例、反应温度等)对接枝效果的影响,认为烷基化改性后的纳米二氧化硅粒子在聚合体系中充当极性溶剂中心的作用,控制马来酸酐和苯乙烯在粒子表面的接枝。
Maleic anhydride and styrene were chemically attached to silica nanoparticles through the double bonds introduced during the pretreatment with a silane coupling agent. The factors affecting graft copolymerization were carefully investigated, including the concentration of initiator, ratio of monomers, and reaction temperature. The alkylated nano-silica particles acted as the center of polar solvent and controlled the grafting reaction.
出处
《广东化工》
CAS
2010年第4期75-76,83,共3页
Guangdong Chemical Industry
关键词
接枝共聚
表面改性
纳米粒子
graft copolymerization
surface modification
nanoparticles
