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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Biomaterials. 2012 Jan 20;33(11):3143–3152. doi: 10.1016/j.biomaterials.2011.12.050

Fig. 3.

Fig. 3

(A) FTIR spectra of GGMA and dried GGMA hydrogels crosslinked for varying time. The shoulder peak appearing around 1640cm−1 corresponds to the unreacted C=C bonds. (B) Stress-strain curves of GGMA/GelMA SN and DN hydrogels with the same mass ratio (GelMA/GGMA = 8.2). Every crosslinking time was 120 seconds, and GelMA (DM: 32.3%) was used. The number in parenthesis refers to the polymer content of the hydrogels.