Fig. 20

(A) Scanning electron micrographs of (a) neat PC foam, and PC/CNT composite foams with (b) 1 wt%, (c) 3 wt% and (d) 5 wt% of CNTs. The insets are the size distributions of cells in the corresponding foams; (B) Electrical conductivity of PC/CNT composites and their foams with different porosities as a function of CNT content, (b) specific SE_T of PC/CNT composites and their foams at 9.5 GHz. Adapted with permission from Yu et al. [105], copyright 2015 Elsevier