Figure 4.
Physical characteristics of the 3D-printed Gel/SA/dECM scaffolds. (A) FITR spectra of the scaffolds before and after crosslinking. (B) FITR spectra at 1000–1800cm−1. (C) Swelling ratio of the scaffolds. (D) Swelling ratio during the initial 6 h. (E-G) Water contact angles of the scaffolds at 0 s. (H) Water contact angles of the scaffolds at 0 s, 0.5 s, and 1 s. **P<0.01 represents significant difference between two groups. (I) Stress-strain curve of the scaffolds. (J) Compressive modulus of the scaffolds within elastic deformation stage. **P<0.01 represents significant difference between two groups. (K) Porosity of the scaffolds was investigated. NS represents no significant difference between two groups. Hemolytic test was performed on scaffolds and result is shown in (L).