Chemically Cross-Linked Poly(acrylic-co-vinylsulfonic) Acid Hydrogel for the Delivery of Isosorbide Mononitrate

Table 1

Different formulations of AA/PVSA hydrogels.

Sample	PVSA content; (g/100 g solution)	AA content; (g/100 g solution)	AA/PVSA; (Wt%)	EGDMA content; (Wt%)	Drug loading (g/g of hydrogel)
S1	6.02	51.26	89.20/10.80	0.2	0.166±0.012
S2	6.02	62.75	91.00/09.00	0.2	0.164±0.034
S3	6.02	74.25	92.28/07.72	0.2	0.153±0.019
S4	2.29	65.52	96.61/03.39	0.2	0.116±0.028
S5	4.02	65.52	94.21/05.79	0.2	0.144±0.043
S6	5.74	65.52	91.93/08.07	0.2	0.159±0.017
S7	6.97	62.06	90.00/10.00	0.1	nd*
S8	6.97	62.06	90.00/10.00	0.2	nd*
S9	6.97	62.06	90.00/10.00	0.3	nd*

∗nd corresponds to not determine.