摘要
用三步合成法(共沉淀法、微乳液聚合、Stober过程)制备了(Fe3O4/PVA)/SiO2磁性纳米颗粒,并在颗粒表面进行了醛基化修饰。用TEM对不同工艺获得的颗粒形貌和结构进行了表征。结果表明,中间产物Fe3O4/PVAc颗粒的平均尺寸为100nm;终产物(Fe3O4/PVA)/SiO2的尺寸在100~500nm范围内是可调的。醛基化的(Fe3O4/PVA)/SiO2对BSA蛋白具有捕获能力,并且颗粒结合蛋白后具有一定的持久性和耐温性。
Nanocompositions (Fe3O4/PVA)/SiO2 have been prepared by three-step method (co-precipitation, miniemulsion polymerization, Stober process) and structurally characterized by TEM. According to the image of Fe3O4/PVA/SiO2 by TEM, the morphology is obviously core-shell structure: the average diameter of Fe3O4/PVAc is 100 nm; the diameter of (Fe3O4/PVA)/SiO2 is controllable within a certain range (100 - 500 nm). And(Fe3O4/PVA)/SiO2-glutaraldehyde can capture BSA within a certain time at a certain temperature.
出处
《应用化学》
CAS
CSCD
北大核心
2008年第9期1022-1026,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(60571032
90606027)
高等学校博士学科点专项科研基金(20050286014)资助项目