Controllable preparation of magnetic polymer microspheres with different morphologies by miniemulsion polymerization

被引：62

作者：

Sun, Ying ^{[1
]}

Wang, Biao ^{[1
]}

Wang, Huaping ^{[1
]}

Jiang, Jianming ^{[1
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fiber & Polymers, Coll Mat Sci & Engn, Shanghai 200051, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 308卷 / 02期

关键词：

W/O/W miniemulsion; magnetic polymer microspheres; preparation; morphology; particle size; magnetic properties;

D O I：

10.1016/j.jcis.2006.12.076

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Magnetic poly(styrene-co-acrylic acid-co-acrylamide) microspheres were prepared by water-in-oil-in-water (W/O/W) miniemulsion polymerization of monomers in the presence of Fe3O4 nanoparticles. The copolymerizable monomers of acrylic acid and acrylamide were used not only to modify the surfaces of the microspheres with functional groups, but also to act as viscosity regulators to control the morphology and size of these microspheres. It was experimentally observed that the surfaces of these microspheres were functionalized with -NH2 groups produced by copolymerization, the morphologies (sphere, ringlike, and one-hole) of the microspheres were controlled by the concentration of copolymerizable monomers, and all samples prepared were superparamagnetic. The possible mechanism of formation of these magnetic microspheres is also discussed. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：332 / 336

页数：5

共 21 条

[1] Hydrolysis of sucrose by invertase immobilized onto novel magnetic polyvinylalcohol microspheres [J].