Electrically conducting suspensions formed by polyaniline

Effects of mixed conductivity of nanocomposite membranes MF-4SC/PANI

“…For particles of complex geometry, higher values of percolation parameters were also obtained, for example, in [11,22] where the increase in the values was also attributed to anisotropy of particle arrangement in the membrane. Let us also note that, in [16], the volume fraction of PAni in its dispersion in glycerol, at which the percolation transition was observed, was found to be 20-35%.…”

“…Figure 5b shows the relative conductivity of composite membranes (thickness 7.5×10 −5 m), washed with water and vacuum-dried, as a function of PAni content. It can be seen that, for the given series of dry samples, a stepwise increase of electrical conductivity is observed at 10 days of Parameters of the percolation model for nanocomposites MF-4SC/PAni It is known that dispersions of PAni in an inert medium of glycerol [16] as well as in poorly conductive epoxy resin [17] form conductive aggregates. Such systems could be described in terms of the percolation theory.…”