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. 2022 Oct 21;2022:9850743. doi: 10.34133/2022/9850743

Figure 2.

Figure 2

The mechanical properties, swelling, and degradation performance of the GO hybrid hydrogels and the generation of DEX/GO scaffolds through microfluidics 3D printing. (a) G′ and G″ of 8% GO hybrid hydrogels with different GO concentrations as a function of the frequency from 0.1 to 100 rad/s at 37°C. (b) The compression stress of 8% GO hybrid hydrogels with different GO concentrations. ns: no significant difference. (c) Equilibrium swelling ratio of the 8% GO hybrid hydrogels after 6 h swelling. (d) Degradation of the 8% GO hybrid hydrogels with different GO concentrations at 37°C. (e) Self-healing ability of the 8% DEX/GO5 hydrogel was evaluated with an alternating strain of 1% and 300% at 37°C. (f) Images demonstrating the self-healing process for the 8% DEX/GO5 hydrogel. (g) Schematic of the microfluidics 3D printing process of GO-incorporated dextran inks (8%) in histidine solution (2%). (h) Digital images and optical microscopic images of the printed cubic scaffold. Scale bars: (i–iii) 0.5 cm and (iv) 1 mm. (i) SEM images of the printed scaffold from top (i and ii) and side (iii and iv) view. Scale bars in (i–iv) are 1.0 mm, 200 μm, 0.5 mm, and 250 μm, respectively.