稀土磁性微球Fe3O4@PMAA的制备和表征  

Preparation and characterization of rareearth magnetic Fe_3O_4@PMAA microspheres

作　　者：孟繁宗[1,2] 王东来[1] 翟玉春[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]德州学院先进材料研究所,山东德州253023

出　　处：《分子科学学报》2008年第5期341-345,共5页Journal of Molecular Science

基　　金：山东省自然科学基金资助项目(Q2006F01)

摘　　要：在亲水性Fe3O4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),光子相关光谱仪,傅立叶变换红外光谱仪(FTIR)和热重-差热分析(TG-DTA)分别对微球的磁性能,平均水合粒径,化学组成和表面形貌进行了检测.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, we prepared magnetic nanometer particles including carboxyl by photochemistry synthesis in the magnetic fluid Fe3O4 and fluorescent magnetic polymer microspheres （FMPMs） combined with Dy. The magnetism, average size, structure and morphological characterizations of FMPMs were characterrized by VSM, PCS, FTIR and SEM. The resuhs indicated that FMPMs were superparamagnetic, well shaped spheres, 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：O632[理学—高分子化学]