The influence of matrix mediated hopping conductivity, filler concentration, aspect ratio and orientation on the electrical response of carbon nanotube/polymer nanocomposites

J. Silva (1) , S. Ribeiro (1) , S. Lanceros-Mendez (1) , R. Simões (1, 2)

1 Universidade do Minho = University of Minho [Braga]
2 Polytechnic Institute of Cávado and Ave

A model to simulate the conductivity of carbon nanotube/polymer nanocomposites is presented. The proposed model is based on hopping between the fillers. A parameter related to the influence of the matrix in the overall composite conductivity is defined. It is demonstrated that increasing the aspect ratio of the fillers will increase the conductivity. Finally, it is demonstrated that the alignment of the filler rods parallel to the measurement direction results in higher conductivity values, in agreement with results from recent experimental work.

Mots clés: A. Nano composites; A. Polymer-matrix composites; B. Electrical properties; C. Modelling

Domaines: Matériaux

J. Silva, S. Ribeiro, S. Lanceros-Mendez, R. Simões. The influence of matrix mediated hopping conductivity, filler concentration, aspect ratio and orientation on the electrical response of carbon nanotube/polymer nanocomposites. Composites Science and Technology, 2011, 71 (5), pp.643. ⟨10.1016/j.compscitech.2011.01.005⟩. ⟨hal-00730308⟩