Synthesis and Dispersion of Magnetic Nano-Particles by a Surfactant-Mediated Approach

Abstract:

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Magnetic nano-particles of around 20nm synthesized by poly-ethylene glycol (PEG) and sodium oleate mediated approach show well stability without sediment during 6 months. Upon treated through the modification procedure, magnetic nano-particles have a weakly physical bond with PEG, meanwhile a strong bond with sodium oleate. Naked magnetic nano-particles present positive charges on the surface, while turn to be negative when modified with sodium oleate, which suggest that the hydrophilic carboxyl on the surface of the nano-particles is outward. Magnetic property of the nano-particles changes according to the concentrations of reactants and surfactant.

Info:

Periodical:

Key Engineering Materials (Volumes 330-332)

Main Theme:

Edited by:

Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu

Pages:

231-234

DOI:

10.4028/www.scientific.net/KEM.330-332.231

Citation:

P. Hou et al., "Synthesis and Dispersion of Magnetic Nano-Particles by a Surfactant-Mediated Approach", Key Engineering Materials, Vols. 330-332, pp. 231-234, 2007

Online since:

February 2007

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Price:

$35.00

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