Nano Archive

Stabilized aqueous dispersion of multi-walled carbon nanotubes obtained by RF glow-discharge treatment

Vandsburger, Leron and Swanson, Edward J. and Tavares, Jason and Meunier, Jean-Luc and Coulombe, Sylvain (2009) Stabilized aqueous dispersion of multi-walled carbon nanotubes obtained by RF glow-discharge treatment. Journal of Nanoparticle Research, 11 (7). pp. 1817-1822.

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Official URL: http://www.springerlink.com/content/5878761u1l576x...

Abstract

This article reports a method for surface modification of multi-walled carbon nanotubes (MWNTs) using a low-pressure capacitively coupled RF glow-discharge. Ar/C2H6 and Ar/C2H6/O2 gaseous mixtures were used to produce non-polar (np-) and polar (p-) coatings, respectively, onto MWNTs. After 5 min of plasma treatment at 20 W and 20 torr, strongly hydrophobic and non-electrically conductive np-MWNTs were produced. The p-MWNTs were strongly hydrophilic and showed no measurable hydrophobic recovery 2 weeks after treatment. Aqueous suspensions of p-MWNTs remained stable and free of agglomerates after being boiled. The ζ-potential of p-MWNT nanofluids was −40.3 mV, indicating a highly stable dispersion.

Item Type:Article
Uncontrolled Keywords:Carbon nanotubes - Nanofluids - Suspensions - Plasma treatment - Colloids - MWCN
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Soft materials
Material Science > Nanochemistry
ID Code:7707
Deposited By:Lesley Tobin
Deposited On:31 Mar 2010 16:55
Last Modified:31 Mar 2010 16:55

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