The electronic transport properties and microstructure of carbon nanofiber/epoxy composites
By A. Allaoui, S. Hoa, M. Pugh. 2008
136 citations recorded by the source corpus.
Abstract Carbon nanofibers (CNF) were dispersed into an epoxy resin using a combination of ultrasonication and mechanical mixing. The electronic transport properties of the resulting composites were investigated by means of impedance spectroscopy. It was found that a very low critical weight fraction (pc = 0.064 wt%) which may be taken to correspond to the formation of a tunneling conductive network inside the matrix. The insulator-to-conductor transition region spanned about one order of magnitude from 0.1 to 1 wt%. Far from the transition, the conductivity increased by two orders of magnitude. This increase and the low value of the conductivity were explained in terms of the presence of an epoxy film at the contact between CNF. A simple model based on the CNF–CNF contact network inside the matrix was proposed in order to evaluate the thickness of that film.
Subfields: Biomedical Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/3d83354b8a24f8e44c1d891d4955758b817e7f44
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In Biomedical Engineering
In Materials Chemistry
Citations in the corpus
- Micromechanics modeling of the electrical conductivity of carbon nanotube (CNT)–polymer nanocomposites (2013, methodology): “In literature, several works have demonstrated that the average separation distance da between adjacent CNTs when conductive networks are formed after percolation follows a power law description [20,21,27].”