Piezoresistive materials from directed shear-induced assembly of graphite nanosheets in polyethylene

被引:146
作者
Lu, JR [1 ]
Weng, WG [1 ]
Chen, XF [1 ]
Wu, DJ [1 ]
Wu, CL [1 ]
Chen, GH [1 ]
机构
[1] Huaqiao Univ, Dept Mat Sci & Engn, Quanzhou 362021, Peoples R China
关键词
D O I
10.1002/adfm.200400298
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A three-dimensional conductive nanocomposite with an ordered conductive network and low percolation threshold has been successfully prepared by blending graphite nanosheets (GNs) with polyethylene on a two-roll mill. The conductive nanosheets orient intensively in the composite, leading to highly anisotropic properties. The nanocomposite with the fraction of conductive nanosheets closest to the percolation threshold possesses a sharp positive pressure coefficient of resistivity, in which the abrupt transition can be attributed to compressive-stress-induced deformation of the conductive network. Such piezoresistive effects depend strongly on filler morphology, filler spatial arrangement, and filler concentration.
引用
收藏
页码:1358 / 1363
页数:6
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