Highly Porous pH-Responsive Carboxymethyl Chitosan-Grafted-Poly (Acrylic Acid) Based Smart Hydrogels for 5-Fluorouracil Controlled Delivery and Colon Targeting

Figure 2

Dynamic swelling coefficient of Poly (CMCS-g-AA) hydrogels with different concentration of AA (25.45, 32.72, and 40 g) using EGDMA as crosslinking agent (0.7% of AA) in 0.05 M USP phosphate buffer solutions of different pH at 37°C.