Preparation and surface modification of magnetic poly(methyl methacrylate) microspheres

被引：7

作者：

Yang, CL ^{[1
]}

Guan, YP ^{[1
]}

Xing, JM ^{[1
]}

Liu, JG ^{[1
]}

An, ZT ^{[1
]}

Liu, HZ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China

来源：

SCIENCE IN CHINA SERIES B-CHEMISTRY | 2004年 / 47卷 / 04期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

methyl methacrylate; superparamagnetic; spraying suspension polymerization; surface modification; preparation; characterization;

D O I：

10.1360/04yb0033

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel method for preparation of magnetic polymer microspheres by spraying suspension polymerization (SSP) was developed. Relatively uniform magnetic poly(methyl methacrylate) microspheres were prepared by the spraying suspension polymerization (SSP) using methyl methacrylate (MMA) as monomer, divinylbenzene (DVB) as cross-linking agent, benzoyl peroxide (BPO) as initiator and polyvinyl alcohol (PVA) as stabilizer in the presence of hydrophobic Fe3O4 magnetic fluid. The microspheres prepared were modified by surface chemical reaction. The magnetic properties and morphology of the microspheres were examined by SEM and VSM respectively. The active functional groups of microspheres were examined by infrared spectra. The results showed that microspheres with saturation magnetization of 16.8 emu/g showed distinct superparamagnetic characteristics and the magnetic microspheres with a size of 10 mum were relatively uniform.

引用

页码：349 / 354

页数：6

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