Dimethylformamide: an effective dispersant for making ceramic–carbon nanotube composites

Inam, Fawad, Yan, Haixue, Reece, Michael and Peijs, Ton (2008) Dimethylformamide: an effective dispersant for making ceramic–carbon nanotube composites. Nanotechnology, 19 (19). p. 195710. ISSN 0957-4484

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Official URL: http://dx.doi.org/10.1088/0957-4484/19/19/195710

Abstract

Carbon nanotube (CNT) and alumina dispersions were prepared separately in dimethylformamide (DMF) and ethanol by ultrasonication. The colloidal stability of the dispersions was monitored and a particle size analysis was performed to evaluate the size range of the agglomerates after different times. DMF was found to be a much more effective dispersant than ethanol for making stable, homogeneous CNT and composite dispersions. Alumina-CNT (4.65 vol%) nanocomposites were sintered in a spark plasma sintering (SPS) furnace. DMF dispersions produced homogeneously distributed and agglomerate-free CNT-alumina nanocomposites with higher electrical conductivity as compared to nanocomposites prepared using ethanol.

Item Type: Article
Subjects: F200 Materials Science
F300 Physics
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Fawad Inam
Date Deposited: 24 May 2013 15:30
Last Modified: 10 Aug 2015 11:31
URI: http://nrl.northumbria.ac.uk/id/eprint/12673

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