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. 2021 Sep 3;6(36):23067–23075. doi: 10.1021/acsomega.1c02117

Figure 1.

Figure 1

(A) 1H NMR spectra of Gel and GelMA. (B) 1H NMR spectra of Col and ColMA. Macroscopic appearance of the printed porous GelMA/ColMA hydrogel (C1–C4). 3D printed GelMA/ColMA hydrogel showing excellent mechanical performances: supporting its own weight (C2) and twisting (C3).