摘要
以3-氨丙基三乙氧基硅烷作为修饰剂,对具有永磁性的NdFeB磁性粒子进行了表面修饰,使之表面带有活性-NH_2基官能团.通过傅立叶红外光谱、差示扫描量热、热重分析、透射电镜以及磁性分析等方法对磁性微粒表面功能团进行表征,证明在选定的实验条件下,达到了理想的表面修饰效果.该法试剂易得,操作简单,结果稳定,可以使氨基化的永磁微粒进行进一步的生物应用.
In order to be conjuncted with active - NH2 groups, the surface modification of Nd- FeB permanent magnetic particles by 3-aminopropyhriethoxysilane （APES） was studied in this paper. The surface functional groups of the modified NdFeB magnetic particles were investigated by FT-IR, DSC-TG, TEM and magnetic hysteresis loop measurements, and the experimental re- suits showed that effective amino-silane modified magnetic particles was obtained under the opti- mum conditions. The methods reported in this paper have some advantages, such as simple rea- gents, easy operation and stable property. The APES coated NdFeB magnetic particles could be used for further biological researches.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第4期96-101,共6页
Journal of East China Normal University(Natural Science)
基金
国家自然科学基金(20575022)
关键词
NDFEB磁粉
偶联剂
表面修饰
NdFeB magnetic particles, amino-silane
surface modification
