Characterization of Fe_3O_4/P(St-MPEO) Amphiphilic Magnetic Polymer Microspheres

作     者：CHAN ALBERT S. C. YIP C. W. 

作者机构：Open Laboratory of Chirotechnology and Department of Applied Biology and Chemical TechnologyOpen Laboratory of Chirotechnology and Department of Applied Biology and Chemical Technology Hong Kong Polytechnic University Hong Kong P. R. ChinaHong Kong Polytechnic University Hong Kong P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2002年第18卷第4期

页      面：458-461页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Supported by the National Natural Sciences Foundation of China( No.5 990 3 0 0 7) Hong Kong Polytechnic U niversity the Youth Reseacher Foundation of Chengdu Institute of Organic Chem istry Chinese Academ y of Sciences 

主　　题：Amphiphilic magnetic polymer Microsphere Copolymerization 

摘      要：Amphiphilic magnetic microspheres consisting of styrene and poly(ethylene oxide) macromonomer(MPEO) were prepared by dispersion copolymerization in the presence of Fe_3O_4 magnetic fluid in an ethanol/water medium. The sizes of the magnetic microspheres and their distribution were characterized by means of scanning electron microscopy(SEM). The surface morphology and the average surface roughness of the microspheres were investigated by virtue of atomic force microscopy(AFM). It was found that the microspheres exhibit microscopic phase-separate and the mean square surface roughness of the microspheres increases with increasing MPEO used in the copolymerization. The amphiphilic magnetic microspheres containing 0 4-3 5 mg/g hydroxyl groups could be prepared from MPEO with different concentrations and styrene.