Figure 2.
(a) Shear moduli of an aqueous mixture of gelatin and silk fibroin as a function of time. (b) FT-IR of hydrogels. The three vertical dotted lines are (from left to right) amide I, amide II and amide II peaks. (c,d) SEM images of (c) 1-IPN and 2-IPN hydrogels. Scale bar = 100 µm.