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. 2024 Aug 19;11(39):2405420. doi: 10.1002/advs.202405420

Figure 1.

Figure 1

The overall research design and characterization of the PGS/PCL‐Gelatin (PPG) scaffolds. A) Schematic illustration for the design of MI‐TET. B) Fabrication process of the PPG scaffolds. 3D‐printed and thermo‐cured PGS/PCL scaffolds were composited with gelatin fibrous network to fabricate PPG scaffolds. C) Optical microscope images of the PPG scaffolds. Green and red arrows represent PGS/PCL framework and gelatin fibrous network, respectively. Scale bars: 1 mm. D) Gross images of 3D‐printed PGS/PCL scaffolds and PPG scaffolds. E,F) SEM images of the two scaffolds at different magnifications in top view and section view. Scale bars: 1 mm, 500 µm, 200 µm, 100 µm. G) Macropore size of the PGS/PCL framework and gelatin fibrous network, *p < 0.05. H) Micropore size inside the filaments. I) Typical compressive stress–strain curves resulting from uniaxial compression tests. J) Cyclic compression tests for ten cycles with maximum strain of 40%. K) Comparison of compressive modulus, *p < 0.05. L) Water absorption rate, *p < 0.05. M) FTIR spectroscopy analysis. N) Dynamic water contact angle changing curve with time.