Figure 2.

Typical gelatin–silica BG hybrid scaffolds prepared by direct foaming–freezing method. The molecular-level distributions in polymer matrix and significantly improved mechanical properties can be obtained after direct hybridization process. (A-B) Scaffolds morphology of pure gelatin (A) and gelatin-BG hybrids; (C-D) Stress-strain curves (C) and compressive strength (D) of samples (GLA: gelatin; GS: siloxane; SS: silica-based glass). Reproduced from Ref. [25] with permission from Elsevier.