Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites

被引：42
|
作者：
Yang, Y. [1 ]
Gupta, M. C. [1 ]
Zalameda, J. N. [2 ]
Winfree, W. P. [3 ]
机构：
[1] Univ Virginia, Charles L Brown Dept Elect & Comp Engn, Charlottesville, VA 22904 USA
[2] USA, Res Lab, NASA Langley Res Ctr, Nondestruct Evaluat Sci Branch, Hampton, VA 23681 USA
[3] NASA, Langley Res Ctr, Nondestruct Evaluat Sci Branch, Hampton, VA 23681 USA
来源：
MICRO & NANO LETTERS | 2008年 / 3卷 / 02期
关键词：
D O I：
10.1049/mnl:20070073
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites were investigated. The dispersion of carbon nanotubes ( CNTs) in the nanocomposites was characterised by scanning electron microscope; it was observed that CNTs were homogeneously dispersed and embedded within the polystyrene matrix. The thermal conductivity of the nanocomposites were measured with a through transmission thermal inspection system at room temperature. The results showed that the thermal conductivity increased with an increase in CNT content, and the nanocomposite loaded 5 wt% CNTs exhibited a 120% enhancement in thermal conductivity. The correlation between the dispersion behaviour and thermal and electrical conductivities was discussed. In addition, it was demonstrated that CNT-polymer nanocomposites give larger increases in thermal and electrical conductivities for the same loading of carbon nanofibres, graphite powders and silver nanoparticles.
引用
收藏
页码：35 / 40
页数：6
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