Research Article

Synthesis and Characterization of Chemically Cross-Linked Acrylic Acid/Gelatin Hydrogels: Effect of pH and Composition on Swelling and Drug Release

Table 4

Sol-gel fraction analysis and porosity measurement of different formulations of AA/Gelatin hydrogels.

Sample codes
Degree of cross-linking (EGDMA) % W/WGel fraction (%)Sol fraction (%)Porosity (%)

U10.7084.4415.5644.07
U20.7086.5913.4156.81
U30.7090.229.7862.09
U40.7087.1212.8846.43
U50.7090.239.7757.47
U60.7094.545.4663.72
U70.6585.6414.3669.03
U80.7589.0910.9165.32
U90.8595.234.7762.30