The cryo-fracture surface SEM micrograph in Fig. 2b further confirms the co-continuous phase of D65/35.
A co-continuous morphology with one smooth phase (net-like) and one coarse phase is clearly seen.
Although it is still hard to distinguish the NR phase from the PLA phase since the SEM only expresses 2D information,
it does not prevent evaluating the improved compatibility between cross-linked NR phase and PLA phase.
No debonding or voids implies excellent compatibility between the two phases, and one phase wellembedded
in the other is also evidence of good interfacial adhesion.