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1H-NMR spectra image of CS, HA, MeCS, and MeHA. (A) 1H-NMR spectra image of CS and HA before reacting with pGMA. (B) 1H-NMR spectra image of acrylate peaks at ∼5.3 ppm to ∼6.2 ppm indicate the presence of methacrylation in MeCS. Acrylate peaks at ∼5.7 ppm to ∼6.2 ppm indicate the presence of methacrylation in MeHA.
