节点文献

表面引发原子转移自由基聚合方法合成Fe₃O₄/PMMA复合纳米微粒

Synthesis of Fe₃O₄/PMMA Nanocomposite Particles by Surface-Initiated ATRP and Characterization

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 AN Li-Juan~(1,2),LI Zhao-Qiang~(1),WANG Yan-Ping~(1),YANG Bai~(1*)(1.Key Lab for Supramolecular Structure and Materials,College of Chemistry, Jilin University,Changchun 130023,China;2.College of Science,Tianjin University of Science and Technology,Tianjin 300222,China)

【机构】吉林大学超分子结构与材料教育部重点实验室化学学院；吉林大学超分子结构与材料教育部重点实验室化学学院长春130012；天津科技大学理学院；天津300222；长春130012；

【摘要】采用表面引发原子转移自由基聚合方法合成了核壳结构的磁性高分子纳米微粒.作为聚合反应引发剂的3-氯丙酸,首先与油酸修饰的Fe3O4纳米微粒表面的部分油酸置换,然后在Fe3O4纳米微粒表面引发甲基丙烯酸甲酯聚合,合成的纳米复合材料用TEM,FTIR,XRD和DSC表征.磁性测试结果表明,所制备的磁性高分子纳米微粒仍具有超顺磁性,但由于聚合物的存在,其饱和磁化强度降低.更多还原

【Abstract】 This paper described the synthesis of a new Fe₃O₄/PMMA core-shell nanocomposite particles with magnetism.The modified Fe₃O₄ nanoparticles were firstly synthesized by ligand exchange with 3-chloropropionic acid as the initiator from oleic acid.And then,PMMA was polymerized by surface-initiated atom transfer radical polymerization（ATRP） on the surface of Fe₃O₄ nanoparticles.The nanocomposites were characterized by TEM,FTIR,XRD and DSC.The magnetic properties of the Fe₃O₄nanoparticles and the Fe₃O₄/PMMA nanocomposite were also studied.The saturation magnetization of the nanocomposites was reduceded because of the existence of the polymer.更多还原