聚环戊烯包覆Fe_3O_4磁性纳米粒子的原位诱导结晶法制备及其结构表征  

Polycyclopentene-encapsulated Magnetic Fe_3O_4 Nanoparticles by In Situ Induced Crystallization: Preparation and Structural Characterizations

作　　者：徐飞霞[1] 徐立新[1] 程飞[1] 陈枫[1] 钟明强[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,杭州310014

出　　处：《科技通报》2014年第3期1-5,共5页Bulletin of Science and Technology

基　　金：国家自然科学基金面上项目(21074117)

摘　　要：在磁性Fe3O4纳米粒子存在下,利用烯烃聚合后过渡金属催化剂α-二亚胺钯在温和条件下催化环戊烯原位聚合,通过聚环戊烯(PCP)在磁性纳米粒子表面原位异相成核结晶,成功获得一系列PCP包覆磁性Fe3O4纳米粒子。分别通过X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、热重分析(TGA)、差示扫描量热分析(DSC)、扫描电镜(SEM)和透射电镜(TEM)技术对产物结构进行了表征,结果表明PCP已成功包覆于磁性Fe3O4纳米粒子表面,所得复合型磁性纳米粒子仍具有较好的磁性能。In this paper, polycyclopentene （PCP）- encapsulated Fe3O4 magnetic nanoparticles were successfully synthesized via in situ polymerization of cyclopentene in the presence of Fe3O4 magnetic nanoparticles and subsequent induced heterogeneous nucleation crystallization. Polymerizations of cyclopentene were performed with a late transition metal catalyst, Pd- α- diimine, under milder conditions. The structural characterizations of the resulting PCP- encapsulated Fe3O4 magnetic nanoparticles were carried out by means of a series of techniques including X-ray diffraction （XRD）, Fourier-transformed infrared spectra （FT-IR）, thermogravimetrical analysis （TGA）, differential scanning calorimetry （DSC）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. It is well confirmed that PCP can be conveniently encapsulated on the surface of Fe3O4 magnetic nanoparticles to render PCP-encapsulated Fe3O4 nanoparticles, which are demonstrated to have well-remained magnetic performance.

关 键 词：磁性FE3O4纳米粒子 聚环戊烯 原位诱导结晶 包覆 磁性能 

分 类 号：O631.1[理学—高分子化学]