制备具有纳米 Fe(0) 的磁性高分子微球

Preparation of magnetic polymer particles with nanoparticles of Fe(0).

机构信息

Instituto Politécnico Nacional, ESIQIE, Edificio Z-6, Del. Gustavo A. Madero, C.P. 07738, Col. San Pedro Zacatenco, México DF, Mexico.

出版信息

J Colloid Interface Sci. 2011 Feb 1;354(1):139-43. doi: 10.1016/j.jcis.2010.09.076. Epub 2010 Oct 14.

DOI:10.1016/j.jcis.2010.09.076

PMID:21051044

Abstract

Iron nanoparticles (Fe(0)), were encapsulated into polymethyl methacrylate (PMMA), by means of emulsion polymerization techniques in a semicontinuous process. The final average diameter of the composite particle was calculated until three times of average particle of iron particles and were stabilized with a non-ionic surfactant. They were then characterized by scanning electron microscopy and dynamic light scattering. Their magnetic properties were determined by parallel field vibrating-sample magnetometry method. The results indicated that the magnetic properties are a function of polymer concentration in the nanocomposite particle.

摘要

采用半连续乳液聚合技术，将纳米铁颗粒（Fe(0)）封装到聚甲基丙烯酸甲酯（PMMA）中。通过扫描电子显微镜和动态光散射对复合粒子进行了表征。复合粒子的最终平均粒径计算结果为铁颗粒平均粒径的三倍，并使用非离子表面活性剂进行稳定。通过平行磁场振动样品磁强计法测定了其磁性。结果表明，磁性是纳米复合粒子中聚合物浓度的函数。