
Keywords: Biodegradable hydrogel; Poly(β-amino ester); Hydrophilic/hydrophobic; DEGDA; diethylene glycol diacrylate; DM; double macromer; DMPA; 2,2-dimethoxy-2-phenylacetophenone; FTIR; Fourier transform infrared spectroscopy; GPC; gel permeation chromatography; P