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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Acta Biomater. 2009 Feb 28;5(6):1872–1883. doi: 10.1016/j.actbio.2009.02.030

Figure 7.

Figure 7

1H NMR of uncross-linked (top) and 1H DOSY 1D of photocross-linked (bottom) macromonomers (4KG5DA, 4KG5DM, and 4KG5UDM) in D2O at two mass fractions (10% and 20%). Photopolymerization is induced directly in an NMR tube. 1mL of macromonomer solution containing the photoinitiator (I2959) was transferred into the NMR tube before curing with a long wavelength UV source (365 nm, 300 μW/cm2) to obtain hydrogel. The vinylic peaks (between 5.5-6.5 ppm) disappeared after 10 min irradiation.