International Journal of Chemical Engineering / 2018 / Article / Fig 2

Research Article

Polyelectrolyte Complexation versus Ionotropic Gelation for Chitosan-Based Hydrogels with Carboxymethylcellulose, Carboxymethyl Starch, and Alginic Acid

Figure 2

SEM images for hydrogels made from CMC 2%: (a) ionotropic gelation with CaCl2 1% w/w; (b) ionotropic gelation with CaCl2 4.9% w/v; (c) polyelectrolyte complexation with CS 0.01% w/v; (d) combination of ionotropic gelation and polyelectrolyte complexation (CaCl2 1% w/w). Scale 200x.