Dielectric properties of resin/carbon-black nanocomposites were measured and shown to differ
from results given by a random sets modeling approach. The origin of the discrepancies was traced
back to the presence of sets of carbon planes, detached from the carbon-black particles during the
composite preparation. These planes are dispersed in the resin matrix and are nearly invisible, even
in HRTEM images. EELS measurements revealed the signature of bonding states typical of
graphite-like compounds, in regions of the matrix previously supposed to be free of carbon-black. A
new approach to texture characterization of HRTEM images, using Haralick parameters based on
pixel intensity co-occurrence matrices, showed strong differences between pure resin and regions of
the composite between carbon particles. The nano-scale characterization results explain the values
obtained in macroscopic measurements.