Preparation and characterization of SiO2/(PMMA/Fe3O4) nano particles using linolenic acid as crosslinking agent
Magnetic silica nanocomposites have the wide promising applications in the biomedical field. This paper described that Fe3O4 nanoparticles were encapsulated with methyl methacrylate (MMA) using linolenic acid (LA) as a crosslinking agent instead of oleic acid (OA). LA has three unsaturated double bonds with which it can polymerizate more easily than OA. Then, the resulting PMMA/Fe3O4 nanoparticles were coated with silica, forming SiO2/(PMMA/Fe3O4) core-shell structure particles. Finally, the nanoparticles were characterized with transmission electron microscopy and scanning electron microscope. The sizes of nanoparticles with core-shell structure were in the range from 300 to 600 nm. Narrow size distribution indicated consistent size of the particles.
magnetic methyl methacrylat latez miniemulsion polymerization linolenic acid Fe3O4 nanoparticles silica
He Lei Li Zhi-Yang He Nong-Yue
School of Public Health, Southeast University, Nanjing, 210009, China The State Key Laboratory of Bioelectronics, Southeast University, Nanjing, 210096, China
国际会议
International Symposium on Medical and Pharmaceutical Biotechnology(医药生物技术国际研讨会)
南京
英文
133-135
2009-04-27（万方平台首次上网日期，不代表论文的发表时间）