Fig. 2From: The application of a 4D-printed chitosan-based stem cell carrier for the repair of corneal alkali burnsPhysical behavior of 4D-CTH. a Analysis of chitosan, CMCTS and chitosan-based thermosensitive gel (CMCTS/Chitosan) by ATR-FTIR. b Swelling rate of 4D-CTH cell carrier. c Storage modulus and loss modulus of chitosan-based temperature-sensitive gel measured in the frequency range of 0.1–100 HzBack to article page