铁氧磁流体的微波水热合成、表面修饰和磁性高分子微球的制备  

PREPARATION OF FERROMAGNETIC PARTICLES BY MICROWAVE IRRADIATION AND ITS SURFACE MODIFICATION

作　　者：包建军[1] 刘迪文[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2003年第5期204-207,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金重点项目(20034006);国家自然科学基金面上项目(50203006)资助。

摘　　要：讨论了微波辐射下Fe3+/Fe2+的水解过程。通过微波辐照引起的快速成核,微波可以将铁磁粒子的直径从143nm～248nm减少到114nm～219nm。微波能均匀升高体系温度,加速铁盐的水解,有利于形成小粒径均分散的铁磁粒子。用酒石酸二丙烯酸酯改变铁磁粒子的表面性质,在有机相和无机相之间建立连接,使无乳化剂乳液聚合和分散聚合制备磁性高分子微球可以顺利完成。The hydrolysis of iron ions (Fe3+, Fe2+) was performed using microwave irradiation in this paper. Owing to the fast nucleation process caused by microwave heating, the size of prepared ferromagnetic particles decreased from 143 nm^248 nm to 114 nm^219 nm. This arises mainly because microwave can heat the system homogenously and quickly, accelerate the hydrolysis procedure. Maleic acid diacrylate (CH2CHCOOCH(COOH)]2) was synthesized and used in the surface modification of ferroferric oxide. This monomer anchors on the surface of ferromagnetic particle through its carboxyl groups, and copolymerizes with MMA. By its connection, the magnetic composite particles can be prepared using MMA either by emulsifierfree emulsion polymerization or by dispersion polymerization.

关 键 词：铁氧磁流体 微波水热合成 表面修饰 磁性高分子微球 制备 

分 类 号：TB34[一般工业技术—材料科学与工程] TM277[电气工程—电工理论与新技术]