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

Figure 7

Cumulative 5-FU % release from Poly (CMCS-g-AA) hydrogels with time at various pH values and 37°C in 0.05 M USP phosphate buffer solution.