The Preparation and Characterization of Self-assembly Magnetocapsules

doi:10.3969/j.issn.1000-1093.2015.05.020

Abstract

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

CLC Number:

TM271

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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