摘要
A magnetic and thermosensitive poly(N-isopropylacrylamide)(PNIPAM) nanoparticles were prepared by the following procedure. The core-shell composite microparticles were synthesized by precipitating polymerization with Fe3O4 being entrapped with SiO2 as core and cross-linked PNIPAM as shell. Then,the SiO2 core was etched by hydrofluoric acid and magnetic thermosensitive Fe3O4 /PNIPAM particles were formed. It has also been shown that the Fe3O4/PNIPAM nanoparticles are featured by lower critical solution temperature (LCST) at 33.0 ℃ while the temperature varies from 28.0 ℃ to 36.0 ℃. The composite magnetic thermosensitive particles were characterized by XRD,SEM,TEM and FTIR. The synthetic mechanism is also discussed.
A magnetic and thermosensitive poly（N-isopropylacrylamide）（PNIPAM） nanoparticles were prepared by the following procedure. The core-shell composite microparticles were synthesized by precipitating polymerization with Fe3O4 being entrapped with SiO2 as core and cross-linked PNIPAM as shell. Then,the SiO2 core was etched by hydrofluoric acid and magnetic thermosensitive Fe3O4 /PNIPAM particles were formed. It has also been shown that the Fe3O4/PNIPAM nanoparticles are featured by lower critical solution temperature （LCST） at 33.0 ℃ while the temperature varies from 28.0 ℃ to 36.0 ℃. The composite magnetic thermosensitive particles were characterized by XRD,SEM,TEM and FTIR. The synthetic mechanism is also discussed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第8期1457-1462,共6页
Chinese Journal of Inorganic Chemistry
基金
江苏省教育厅自然科学基金(04KJB150016)
江苏省自然科学基金(BK2006061)。
关键词
温敏
核壳
纳米颗粒
磁性物质
thermosenitive
core-shell
nanoparticles
magnetic material
