【摘要】 研究的目的是合成具有一定分子量的两亲性磁性PEG5k-PCL4k嵌段共聚物复合微球胶束溶液。首先利用溶剂挥发法制备PEG-PCL嵌段共聚物胶束溶液,然后将Fe3O4纳米颗粒加入到胶束溶液中,制备了两亲性磁性PEG-PCL嵌段共聚物复合颗粒,最后采用XRD、FTIR、TEM、1 H NMR及饱和磁化强度对磁性共聚物颗粒的物相、表面结构、微观结构及磁学性能进行了表征。结果表明:所制备的共聚物复合颗粒具有纳米结构、两亲性性能、磁学性能,同时1 H NMR核磁共振能证实了PEG-PCL两嵌段共聚物的组分及聚合单体的比例。更多还原

【Abstract】 The purpose of this study was to synthesize the certain molecular weight PEG5k-PCL4khydrophile/hydrophobe polymer,and the magnetic hydrophile/hydrophobe polymer solution.PEG-PCL micellar solution was prepared by solvent evaporation method,and Fe3O4 particles were added to the micellar solution,finally amphiphilic magnetic PEG-PCL block copolymer composite particles were synthesized.The phase,surface structure,microstructure and magnetic properties of the magnetic copolymer particles were characterized by XRD,FTIR,TEM,1 H NMR and saturation magnetization.1 H NMR proved the component of the block copolymer and the proportion of polymerizable monomers.更多还原