Characterization and Application of Carboxymethyl Chitosan-Based Bioink in Cartilage Tissue Engineering

Figure 2

(a) Schematic diagram of chemical synthesis of modified chitosan. (b) FTIR spectra: top image: carboxymethyl chitosan without any modification, middle image: modified chitosan, and bottom image: freeze-dried hydrogel (after gelation by adding 1 M calcium solution). (c) ¹H NMR spectrum of the EDTA-modified chitosan hydrogel network at 300 MHz. The chitosan/CE conjugate ratio of the samples tested is 90 : 10.

(a)

(b)

(c)