The unetched failure surface morphologies examined by SEM
shown in Fig. 16 give an insight into the failure mechanisms.
River cracks which are characteristic of brittle material behavior
are visible on the CF/RTM6 reference while the CF/RTM6/phenoxy,
CF/RTM6/phenoxy/MWCNT and CF/RTM6/phenoxy/Cloisite 30B
exhibit different morphologies.