摘要
采用在纳米Fe3O4颗粒表面通过引入过氧基因引发甲基丙烯酸甲酯(MMA)聚合的方法,在纳米Fe3O4颗粒表面接枝了PMMA.采用傅立叶红外光谱(IR-FT)检测粉体表面官能团,采用X射线光电子能谱(XPS)检测粉体表面化学键变化,采用高分辨透射电镜(HRTEM)观察改性后粉体的表观形貌.结果表明纳米Fe3O4呈球形,颗粒间团聚不明显,在纳米Fe3O4表面成功地包覆了PMMA,PMMA以化学接枝的方式结合在Fe3O4颗粒表面.
peroxide group was introduced onto the surface of Fe3O4 to initiate MMA to polymerize at last we gained magnetic Fe3O4 nanoparticles grafting modified. Surface group, Surface chemical bond and appearance of modified and unmodified nanoparticles were characterized by FT-IR, XPS and HRTEM. The result is that Fe3O4 nanoparticles are spheres and the reuniting between nanoparticles was not evident, Fe3O4 nanoparticles are coated by PMMA in the form of chemical grafting.
出处
《传感技术学报》
CAS
CSCD
北大核心
2006年第05B期2322-2325,共4页
Chinese Journal of Sensors and Actuators
基金
江苏省2005年度研究生创新计划项目
