Preparation of binary conductive polymer composites with very low percolation threshold by latex blending

The communication reports a way to prepare carbon black (CB)/waterborne polyurethane conducting composites with percolation thresholds as low as 0.2 vol.% through conventional latex blending. CB particles in the composites appear segregated in their distribution and are located in the two-dimensional interstices among the polymer domains. The intimate filler/matrix interaction also improves the tensile strength of the matrix at the CB content corresponding to the electrical percolation threshold.