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. 2021 Jan 5;14(1):235. doi: 10.3390/ma14010235

Figure 3.

Figure 3

(a) Schematic illustration of the fabrication of the injectable PDH/ICPN hydrogel for bone regeneration. (b) Optical images of the PDH and PDH/12.5ICPN nanocomposite hydrogels under excessive compression (scar bar: 1 cm). (c) Strain-dependent (ω = 10 rad/s) (solid lines represent G′ and dashed line represent G″) and (d) frequency-dependent (at a strain of 1%) oscillatory rheological analysis results. (e) Stress-strain curves of the nanocomposite hydrogels with different calcium phosphate (CaP) contents. (f) Fracture stress and (g) fracture energy of PDH, PDH/mICPN, and PDH/12.5ECPN hydrogels (“*”: p < 0.05, indicating significant differences) [33].