Figure 2.
GelMA synthesized from (a) porcine gelatin, (b) bovine gelatin, and (c) cold-water fish gelatin was photo-cross-linked (λ =365 nm) on a parallel plate rheometer at room temperature with 5mW·cm−2 intensity for 5 minutes after incubation at 37°C to determine crosslinking kinetics. GelMA synthesized from (d) porcine gelatin, (e) bovine gelatin, and (f) cold-water fish gelatin was photo-crosslinked (λ =365 nm) with the same testing parameters after incubation at 4°C to determine crosslinking kinetics of materials with both physical and chemical crosslinks. GelMA samples were tested at high, mid, and low DS. Data represents the average Storage modulus (G’) across three replicates.