Fig. 12. (A) TEM images of nanocomposites displaying crack bridging (a and b), crack deflection (b) and delamination (b) of GO.⁶⁶ Reprinted with permission from ref. 66 (Copyright © 2014 Elsevier Ltd). (B) SEM images of fractured epoxy composite samples showing poor adhesion in the case of graphene/epoxy (a and b) and strong adhesion in Triton–graphene/epoxy (c and d).⁶⁰ Reprinted with permission from ref. 60 (Copyright © 2013 Elsevier Ltd). (C) Toughening mechanisms in epoxy composites containing GNPs (a and b) and TRGO (c and d), the white arrow indicates the delaminated surface of the nano-filler.¹⁰³ Reprinted with permission from ref. 103 (Copyright © 2014 Elsevier Ltd).