Graphene Nanoplatelets in Epoxy System: Dispersion, Reaggregation, and Mechanical Properties of Nanocomposites

Figure 6

Optical microscopic analyses: (a) graphene-EP before sonication; (b) graphene-HD before sonication; (c) graphene-EP after sonication; and (d) graphene-HD after sonication.

(a)

(b)

(c)

(d)