Obtaining and Characterizing Alginate/k-Carrageenan Hydrogel Cross-Linked with Adipic Dihydrazide

Figure 1

IR spectra of (a) pure alginate (A) and k-carrageenan (C), sodium metaperiodate (NaIO₄), and oxidized alginate (oA); (b) adipic dihydrazide (adh), hydrogel film of oxidized alginate cross-linked with adipic dihydrazide (oA_adh), and cross-linked oxidized alginate/k-carrageenan composite hydrogel film (oAC_5adh); (c) all formulations of cross-linked oxidized alginate/k-carrageenan composite hydrogels films (oAC_1adh–oAC_5adh).

(a)

(b)

(c)