SYNTHESIS OF MAGNETIC POLY(STYRENE-METHACRYLIC ACID) SPHERES PREPARED BY MINIEMULSION POLYMERIZATION

被引：0

作者：

Betancourt Galindo, R. ^{[1
]}

Rodriguez Fernandez, O. S. ^{[1
]}

Garcia Cerda, L. A. ^{[1
]}

机构：

[1] Ctr Invest Quim Aplicada, Saltillo 25253, Coahuila, Mexico

来源：

MAGNETOHYDRODYNAMICS | 2008年 / 44卷 / 04期

关键词：

D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Magnetic poly(styrene-methacrylic acid), P(St-MAA), spheres were synthesized by miniemulsion polymerization in the presence of a ferrofluid. Magnetite (Fe3O4) nanoparticles obtained by the coprecipitation method. with an average diameter of 14 um, were used as a magnetic source. A kerosene-based magnetite ferrofluid was mixed with styrene (St) and methacrylic acid (MAA) monomers in the presence of hexadecane as a co-surfactant: sodium dodecil sulphate (SDS) and potassium persulphate (KPS) were used as a surfactant and an initiator, respectively, for a subsequent polymerization. The morphology and properties of the magnetic spheres were studied by TGA. SEM and VSM. The magnetic P(St-MAA) spheres are uniform in shape and size and have diameters less than 150nm. Magnetization data suggest. a superparamagnetic behaviour and a maximum magnetization of 0.22 emu/g.

引用

页码：353 / 359

页数：7

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