Influence of Surface Characteristics on the Dispersion of Modified Multi-Walled Carbon Nanotubes

Abstract:

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In order to improve the dispersion of multi-walled carbon nanotubes (MWCNTs), MWCNTs were physically modified by the surfactant of Poly (vinyl pyrrolidone) (PVP), cetyl trimethylammonium bromide (CTAB) and sodium dodecylbenzene sulfonate (SDBS), and were chemically treated by the acid oxidation. Measuring the zeta potential of the dispersions of modified MWCNTs and surface contact angle of modified MWCNT powders, influence of acting forces on the dispersions of modified MWCNTs was analyzed. The balance of electrostatic repulsion and van der Waals forces determines the stabilization of aqueous modified MWCNT dispersions. The sufficient reactive groups, ions and long molecular chains play important roles for such balance.

Info:

Periodical:

Advanced Materials Research (Volumes 236-238)

Edited by:

Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao

Pages:

1832-1835

DOI:

10.4028/www.scientific.net/AMR.236-238.1832

Citation:

Y. X. Ma et al., "Influence of Surface Characteristics on the Dispersion of Modified Multi-Walled Carbon Nanotubes", Advanced Materials Research, Vols. 236-238, pp. 1832-1835, 2011

Online since:

May 2011

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Price:

$35.00

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