Effect of Surface Modification of Multiwall Carbon Nanotubes on their Electrical and Surface Properties

Abstract:

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The surface of multiwall carbon nanotubes (CNT) was modified by non-covalent approach. Various types of surfactants, an anionic surfactant - dodecylbenzenesulfonic acid, an cationic surfactant - cetyltrimethylammonium bromide and their combination with different molar ratios were used for modification. Different power of ultrasound, 64 or 400 W was used to evaluate its influence on the properties of prepared composites. The electrical conductivities of unmodified CNT, particles treated by ultrasound, and CNT modified with surfactants were measured. The surface properties of modified particles were determined by X-ray photoelectron spectroscopy and scanning electron microscopy. Thermogravimetric analysis was used to confirm the presence and to evaluate the quantity of surfactants in the modified CNT.

Info:

Periodical:

Materials Science Forum (Volumes 636-637)

Edited by:

Luís Guerra ROSA and Fernanda MARGARIDO

Pages:

676-681

DOI:

10.4028/www.scientific.net/MSF.636-637.676

Citation:

M. Omastová et al., "Effect of Surface Modification of Multiwall Carbon Nanotubes on their Electrical and Surface Properties", Materials Science Forum, Vols. 636-637, pp. 676-681, 2010

Online since:

January 2010

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Price:

$35.00

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