自组装磁性微囊的合成与制备

doi:10.3969/j.issn.1000-1093.2015.05.020

摘要/Abstract

摘要： 以聚丙烯酰胺 (PAM) 为表面活性剂，采用一步水热法合成了超顺磁性Fe₃O₄纳米粒子，并且在改变PAM用量的条件下合成了囊状的磁性材料。通过X射线衍射(XRD)、扫描电子显微镜 (SEM)、振动样品磁强计等对磁性Fe₃O₄的结构、形貌、磁性进行表征。结果表明，磁性微囊外径约为200 nm，组成微囊的Fe₃O₄纳米粒子其粒径分布在30 nm左右，磁性微囊的饱和磁化强度为62.5 emu/g，表现出超顺磁性。

关键词: 纳米材料, 磁性微囊, Fe₃O₄, 水热法, 顺磁性

Abstract: Superparamagnetic Fe₃O₄ nanoparticles, using polyacrylamide as surfactant, are synthesized by one-step hydrothermal method. And then the sacciform magnetic material is obtained by changing the dosage of surfactant. The structure, morphology and magnetism property of the samples are characterized via X-ray diffraction (XRD), scanning electron microscope (SEM) and vibrating sample magnetometer. The results show that the outside diameter of the magnetocapsules is about 200 nm. The size of Fe₃O₄ nanoparticles, composing the magnetocapsules, is about 30 nm. The magnetocapsules manifests a superparamagnetism, and the saturation magnetization intensity of the magnetocapsules is 62.5 emu/g.

Key words: nano material, magnetocapsules, Fe₃O₄, hydrothermal method, paramagnetism

中图分类号:

TM271

张绍帅，张赤军，闫景辉，姚爽，康振辉. 自组装磁性微囊的合成与制备[J]. 兵工学报, 2015, 36(5): 898-903.

ZHANG Shao-shuai， ZHANG Chi-jun, YAN Jing-hui, YAO Shuang, KANG Zhen-hui. The Preparation and Characterization of Self-assembly Magnetocapsules[J]. Acta Armamentarii, 2015, 36(5): 898-903.

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