The mean mass fraction for carbon and nitrogen according to EDX data was in the range of 4% to 56% and 1.6% to 13%, respectively. It is interesting to note that on average the carbon content in the DAB-based composites was higher compared to Phen-based ones, although the carbon content in the DAB was significantly less than in Phen. Probably during pyrolytic destruction, DAB formed more "dense" carbon deposits around copper due to its size smaller than Phen and remained preferably in the composite rather than leaving it in the form of gaseous products.