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

被引：111

作者：

Inam, Fawad ^{[1
,2
]}

Yan, Haixue ^{[1
,2
]}

Reece, Michael J. ^{[1
,2
]}

Peijs, Ton ^{[1
,2
]}

机构：

[1] Univ London, Ctr Mat Res, London E1 4NS, England

[2] Univ London, Sch Engn Mat Sci, London E1 4NS, England

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 19期

关键词：

D O I：

10.1088/0957-4484/19/19/195710

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

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.

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