Figure 10.

Pathway for the production of xerogels, cryogels and aerogels from polysaccharide based hydrogels via several steps including: (a) gelation (SOL→GEL), (b) solvent exchange pre-treatment, if required (e.g., the replacement of the water contained in the pores of the hydrogel with a suitable organic solvent), (c) drying final step with a specific technology. The images of xerogel, cryogel and aerogel beads were here reprinted (with some modifications) from [176] with permission from Elsevier. Copyright (2016).