Anisotropic percolation in carbon black-polyvinylchloride composites
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Influence of defects on the effective electrical conductivity of a monolayer produced by random sequential adsorption of linear k-mers onto a square lattice
2017, Physica A: Statistical Mechanics and its ApplicationsCitation Excerpt :Simulation of the electrical properties of 2D inhomogeneous systems (thin films) is motivated by their numerous applications. The resistance of a two-dimensional system of conducting sticks depends on systems anisotropy [10]. It was shown that the conductivity of a two-phase thin film, with both equal concentrations of the phases and their random distribution, is equal to the geometric mean of the conductivity of the phases [11].
Preparation and properties of aligned poly(3-hydroxybutyrate-co-3- hydroxyvalerate)/cellulose nanowhiskers composites
2013, Carbohydrate PolymersCitation Excerpt :E′ was the lowest at 90° for the aligned composites because the fibers had the weakest reinforcing effect in the transverse direction. The low value of E′ at 90° was also partially attributed to the low probability of fiber contacts (forming a fiber network) in the transverse direction as predicted by the excluded volume theory (Balberg, Anderson, Alexander, & Wagner, 1984; Balberg & Binenbaum, 1983; Balberg, Binenbaum, & Bozowski, 1983; Balberg & Bozowski, 1982; Stauffer & Aharony, 1992). In general, E′ of the aligned samples decreased when θ increased from 0° to 90° due to the fiber orientation.
Synthesis and characterization of polyaniline rubber composites
2008, Composites Science and TechnologyConduction stability of high-density polyethylene/carbon black composites due to electric field action
2005, European Polymer JournalElectrical conductivity of carbonaceous powders
2002, CarbonCitation Excerpt :Hence, there may still exist a large fraction of particles being always misaligned almost randomly. Now, it is well known that orientation of non-spherical particles strongly enhances the percolation threshold of composite systems [30,39,49,50]. However, a few disoriented grains within a set of well-oriented particles gives rise to the same critical volume fractions as those obtained from fully randomly oriented particles (Ref. [39] and references therein).
A comprehensive picture of the electrical phenomena in carbon black-polymer composites
2002, CarbonCitation Excerpt :By quantifying this behavior according to percolation theory we have found, as summarized in Section 2, that the values of both, the (apparent) percolation threshold, pc, and the (apparent) percolation critical resistivity-exponent t depend strongly on the particular type of the CB [2,3]. Following the above considerations we have carried out an extensive experimental, computational and theoretical study, with the aim of obtaining a comprehensive understanding of the electrical transport in CB–polymer composites [2,3,8,10,11]. The different CBs are characterized in our model by their ‘structure’ as was defined many years ago [12]: the more spherical-like the isolated CB particle, the ‘lower’ its structure.