Nano Archive

Adsorption of polymer coated magnetite composite particles onto carbon nanotubes and their magnetorheology

Ko, S. W. and Yang, M. S. and Choi, H. J. (2009) Adsorption of polymer coated magnetite composite particles onto carbon nanotubes and their magnetorheology. Materials Letters, 63 (11). 861 - 863.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Polymer coated nano-sized magnetite (Fe3O4) particles with multiwalled carbon nanotube (MWNT) nanohybrid were prepared by four step procedures in this study. Initially, magnetic particles were synthesized by a co-precipitation method with ammonium hydroxide and oleic acid, and then the produced particles were coated with polyacrylamide (PAAm). Finally PAAm coated magnetite particles (Mag-PAAm) were physically adsorbed onto multiwalled carbon nanotubes (MWNT) under ultrasonication. Transmission electron microscopy (TEM) was used to investigate the formation of Mag-PAAm-MW nanohybrids nanostructure, confirming that prepared Mag-PAAM particles were well adsorbed onto the surfaces of MWNT. In addition, MR characteristics of PAAm coated magnetite particles with MWNT (Mag-PAAm-MW) nanohybrids were investigated under six different external magnetic field strengths via a rotational rheometer, exhibiting typical MR behavior of yield stress and shear stress.

Item Type:Article
Uncontrolled Keywords:Nanocomposite; Magnetorheological fluid; Magnetite; MWNT
Subjects:Material Science > Nanostructured materials
ID Code:6602
Deposited By:SPI
Deposited On:10 Feb 2010 17:44
Last Modified:10 Feb 2010 17:44

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