Fig. 1: Assembly and properties of segregated network nanocomposites.

A, B Schematics of the composite latex-GO dispersion and subsequently-templated film structure. C, D Atomic force micrographs of a latex film before and after heating above the glass transition temperature of the polymer, resulting in particle coalescence. E Achieved conductivity in the latex-GO composites post-reduction. Indicated is the conductivity of a bulk rGO film processed under the same conditions. (inset) Photographs of the sample at each processing step. F Scanning electron micrograph of a fracture surface of a post-reduction composite. G Representative stress-strain curves for pristine latex films and 2 wt% latex-GO composites, before and after reduction, showing toughening under the addition of GO to the polymer, but no significant change in mechanics post-reduction. H Comparison of the maximum reported conductivity (and corresponding filler content) for 25 composites from the literature, categorised by filler material. A table of references is available in the Supplementary Information. I Maximum reported conductivity of polymer composites of rGO and pristine graphene from the literature against reported percolation threshold.