Figure 5.

The compressive strength and compressive modulus of the composite scaffolds with different carbon-based fillers.

Notes: Data are presented as mean ± SD (n=6). * and ^#, statistically significant difference (P<0.05) compared with S1 scaffold; ** and ^##, very significant difference (P<0.01) compared with S1 scaffold. S1, PEEK–10 wt% nano-HAP scaffold; S2, PEEK–10 wt% nano-HAP–1 wt% GNSs; S3, PEEK–10 wt% nano-HAP–0.8 wt% GNSs–0.2 wt% CNTs; S4, PEEK–10 wt% nano-HAP–0.5 wt% GNSs–0.5 wt% CNTs; S5, PEEK–10 wt% nano-HAP–0.2 wt% GNSs–0.8 wt% CNTs; S6, PEEK–10 wt% nano-HAP–1 wt% CNTs.

Abbreviations: CNTs, carbon nanotubes; GNSs, graphene nanosheets; HAP, hydroxyapatite; PEEK, polyetheretherketone; SD, standard deviation.