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. 2022 Jan 23;23(3):1249. doi: 10.3390/ijms23031249

Figure 2.

Figure 2

Physical characterization of complex hydrogels. (a) The swelling ratio of complex hydrogels (mean ± SD, n ≥ 3). (b) SEM micrograph of complex hydrogels. The scale bar stands for 25 µm in (b). (c) Rheological behavior of complex hydrogels, in which the forming state of com- plex hydrogels were showed in the left of each picture. (d) The FTIR of alginate (SA), chi-tosan (CS) and C6-S4 hydrogel. (e) The mass loss of complex hydrogels within 11 days of degra-dation. (f) SEM micrograph of complex hydrogels after 11 days of degradation. The scale bar stands for 25 µm in (f).