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. 2022 Mar 21;8(3):e09145. doi: 10.1016/j.heliyon.2022.e09145

Figure 1.

Figure 1

Surface morphology described by scanning electron microscope (SEM) micrographs of cross-linked hydrogels in the presence and absence of GO-Ag NPs. First row is for 0.7% (w/v) gelatin concentration and varying PVA concentrations from 0.1% (A), 0.4% (B) to 0.7% (w/v) (C). Additionally, the Zudenina® micrograph is presented (D). Second row is for 1.1% (w/v) gelatin concentration and varying PVA concentrations 0.1% (E), 0.4% (F) to 0.7% (w/v) (G). Additionally, the Microdacyn® micrograph is presented (H). Finally, 1.5% (w/v) gelatin concentration and varying PVA concentrations from 0.1% (I), 0.4% (J) to 0.7% (w/v) (K). Average pore size for all treatments is shown (L). 0.7% (w/v) PVA, 20 μg/mL GO-Ag NPs, 1.1% (M) and 1.5% (N) (w/w) gelatin hydrogel are presented at 0 days and at 28 days aging (P) and (Q) respectively with average pore size (O).