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

Table 2

Amount of 5-FU loaded and released from selected samples.

Sample codes	Amount of 5-FU loaded (g/g of dry gel)			Amount of 5-FU released (%) (pH of the solution)
	By swelling	By weight	By extraction	1.2	6.5	7.5
HS1	0.065	0.069	0.060	27.76	61.79	79.13
HS2	0.071	0.073	0.069	23.65	69.90	82.56
HS3	0.072	0.077	0.074	24.99	70.25	83.19
HS7	0.082	0.083	0.078	26.49	77.69	88.89
HS8	0.076	0.078	0.072	24.21	70.74	83.93
HS9	0.059	0.063	0.061	21.37	66.14	77.08