Figure 2.

Rheological analysis of the chitosan gel. a) The storage modulus, loss modulus and phase angle changed with increasing temperature for uncrosslinked chitosan-PEG samples; the sol-gel transition was identified at 35°C. b) The strain sweep at 37°C and 1 Hz for CSPG gel showed that strain at 0.5% was within the lower end of LVR with less noise. c) The evolution of storage and loss moduli of 1.3 %w/v chitosan-PEG in the presence of 0.5 mM genipin while curing at 37°C. d) The storage (G’, filled symbols) and loss moduli (G”, empty symbols) were recorded under increasing shear stress for Matrigel, uncrosslinked chitosan-PEG and crosslinked CSPG gel at 37°C to compare the strength of different gels.