核壳式Fe_3O_4@SiO_2磁性聚合物的制备与表征分析

The Preparation and Characterization of Magnetic Polymer

采用溶胶-凝胶的方法制备了Fe3O4@SiO2复合物,并对它们进行TEM、XRD、FT-IR表征。然后对Fe3O4@SiO2进行表面功能化修饰,并对它进行XPS和FT-IR的表征,结果表明在此复合微球上成功连接了氨基和碳碳双键。最后采用表面印迹的方法制备了核壳式Fe3O4@SiO2磁性聚合物,并用TEM分析观察了其粒子的尺寸和形貌,VSM测定了粒子的饱和磁化强度,结果表明它们具有良好的磁性。

Core-shell structural Fe3O4@SiO2 particles were prepared with the method of sol-geL The prepared composite particles were characterized by TEM, XRD, FT-IR, respectively. Then, The amino （-NH2） groups and CH=CH2 were co- valently bonded to Fe3O4@SiO2 particles. The synthesized magnetic particles were characterized using FT-IR, XPS. The last, （Fe3O4@SiO2）@MIPs were prepared by the method of surface-imprinting. The particles morphology was observed with the TEM and the magnetization curve of the particles was also obtained with the VSM. Results indicated their decentralization was favorable.