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. Author manuscript; available in PMC: 2015 Feb 12.
Published in final edited form as: Small. 2013 Oct 11;10(3):514–523. doi: 10.1002/smll.201302182

Figure 3.

Figure 3

(a) MeGO-GelMA hydrogel is prepared by photoinitiated radical copolymerization of GelMA and MeGO. Stress-strain curves of GelMA hydrogels with varying amounts of (b) GO or (c) MeGO measured from uniaxial compression. (d) Elastic modulus (E) and (e) ultimate stress (U) of GO-GelMA hydrogels and MeGO-GelMA hydrogels. f) Normalized elastic modulus (E/E0) and (g) normalized fracture energy (U/U0) of GelMA hydrogels incorporated with GO or MeGO. The values are normalized with respect to those of pure GelMA hydrogel (E0, U0).(*p<0.05 at the same concentrations of GO and MeGO)