Fig. 1.

Synthesis and characterization of oxygen-generating scaffolds. a-c) Scanning electron microscopy (SEM) images of the oxygen-generation scaffolds OGM₆₀ show the porous microstructure, d) Swelling ratios of the pristine GelMA, OGM₀, OGM₃₀, OGM₆₀, and OGM₉₀ scaffolds decreased based on the CaO₂ content in PCL, e) Degradation analysis of the oxygen-generating scaffolds via enzymatic degradation showed that the percent mass loss in the samples decreased with increasing concentrations of CaO₂, and f) Dynamic mechanical analysis (DMA) for the measurement of the compressive moduli of the oxygen-generating scaffolds. The compressive moduli increased proportional to the increasing amounts of CaO₂.