To evaluate the mechanical properties of the composite, and in particular to confirm the presence of a cohesive interface, compression testing was performed to observe the material behaviour under increasing compressive loading. Stress-strain diagrams (Fig. ) confirm the greater ability of composites containing higher amount of the more flexible ZIF-8 component to accommodate applied stress, which is evident from the earlier onset of sample cracking, seen in the shift towards higher strain. In other words, the more compliant nature of ZIF-8 prevents composite failure at low applied stresses.