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Quím. Nova vol.35 número7

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Table 1. Recent studies of hydrogels based on acrylic acid/sodium acrylate  and acrylamide (Am)
Figure 1. FT-IR spectra of hydrogel of: (A) polyacrylamide; (B) poly (so- (so-dium acrylate-co-acrylamide) 50/50 and (C) poly(so(so-dium acrylate), all gels  crosslinked with MBA
Figure 2. Bands and way utilized for the calculation of relative absorbance,  A rel  = A 1410 /A 2940
Table 3. Comparison between calculated and nominal acrylate content in  hydrogels and their respective swelling in water

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