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

M. Omastová; M. Mičušík; Pavol Fedorko; M.M. Chehimi; J. Pionteck

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

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HomeMaterials Science ForumMaterials Science Forum Vols. 636-637Effect of Surface Modification of Multiwall Carbon...

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

Abstract:

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.

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Materials Science Forum (Volumes 636-637)

Pages:

676-681

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.636-637.676

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Online since:

January 2010

Authors:

M. Omastová, M. Mičušík, Pavol Fedorko, M.M. Chehimi, J. Pionteck

Keywords:

Carbon Nanotube (CN), Electrical Conductivity, Nanocomposite, Surface Properties

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