Figure 7From: Synthesis and characterization of core-shell Fe3O4-gold-chitosan nanostructureEffect of various factors on the equilibrium water cntent of chitosan hydrogel. a) different formaldehyde concentrations added at pH 7 and T = 35°C; b) pH = 7 and crosslinker = 3.5 ml formaldehyde 5 M; c) T = 35°C, crosslinker = 3.5 ml formaldehyde 5 M.Back to article page