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FTIR characterization of 3D printed chitosan- gelatin scaffolds. (A) FT-IR spectra of both pure chitosan and gelatin material, and different crosslinking conditions for 1CHI2GEL. The black and red boxes report a magnification of the shifts in the blends spectra, compared to the pristine material spectra. (B) FT-IR spectra of both pure chitosan and gelatin material, and different crosslinking conditions for 1CHI3GEL.
