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

Figure 4

Dynamic swelling coefficient of Poly (CMCS-g-AA) hydrogels with different concentration of CMCS (1.20 1.40, and 1.60 g) using EGDMA as the crosslinking agent (0.7%) of AA in 0.05 M USP phosphate buffer solutions of different pH at 37°C.