Synthesis and Characterization of Chemically Cross-Linked Acrylic Acid/Gelatin Hydrogels: Effect of pH and Composition on Swelling and Drug Release

Figure 5

Dynamic swelling coefficient of AA/Gelatin hydrogels with different concentration of gelatin (4.0, 5.0, and 6.0 gm) using EGDMA as cross-linking agent (0.7%) of acrylic acid in 0.05 M USP phosphate buffer solutions of different pH values at 37°C.