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. Author manuscript; available in PMC: 2018 Mar 30.
Published in final edited form as: Acta Biomater. 2013 Apr 6;9(7):7362–7370. doi: 10.1016/j.actbio.2013.03.041

Figure 1.

Figure 1

1H NMR spectrum of (a) PGS; (b) PGS-CinA pre-polymer. The presence of pendant cinnamate group is clear from peaks at 7.7, 7.56, 7.4 and 6.5 ppm (see text). The degree of substitution is calculated by comparing the integrals of the methylene groups peak at 1.32 ppm and the vinylene groups peak at 7.7 ppm.