荧光磁性微球Fe_3O_4@PMAA-Dy的制备和表征  

Preparation and Characterization of Fluorescent Magnetic Fe_3O_4@PMAA-Dy Microspheres

作　　者：孟繁宗[1,2] 孙汉文[2] 张连营[2] 翟玉春[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]德州学院先进材料研究所

出　　处：《材料导报》2008年第6期133-136,共4页Materials Reports

基　　金：山东省自然科学基金项目(Q2006F01)

摘　　要：在亲水性Fe_3O_4磁流体中,以甲基丙烯酸(MAA)为单体,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,采用光化学方法在水溶液体系中首先合成磁性聚甲基丙烯酸(PMAA)微球,进而在60℃下PMAA与稀土元素Dy离子反应合成具有荧光特性的磁性微球(FMPMs)。运用振动样品磁强计(VSM)检测微球磁性能,光子相关光谱仪(PCS)测出微球平均水合粒径,傅立叶变换红外光谱仪(FTIR)和热重一差热分析(TG-DTA)检测了微球的化学组成,扫描电子显微镜(SEM)观测了微球的表面形貌。结果表明,荧光磁性高分子微球有超顺磁性,呈很好的球形,表面含有丰富的稀土羧酸盐。Taking the methylacrylic acid as the monomer, N, N＇-methyl radical double acrylics amide as cross linking agent, magnetic nanometer particles including carboxyl are prepared by photochemical synthesis in the magnetic fluid Fe3O4 and fluorescent magnetic polymer microspheres （FMPMs）are synthesized by PMAA combined with Dy. The magnetism, average size, structure and morphological characterizations of FMPMs are characterized by VSM, PCS, FTIR and SEM. The results indicate that FMPMs are superparamagnetic, well shaped spheres, and have abundant carboxylate Dy.

关 键 词：荧光磁性高分子微球 甲基丙烯酸 光化学合成 制备 表征 

分 类 号：TQ460.4[化学工程—制药化工] Q945.11[生物学—植物学]