An overview of key chitosan derivatives, carboxymethyl chitosan and chitosan oligosaccharides, how they are made and why they expand chitosan's uses.

How chitosan hydrogels form, the main crosslinking methods, and their applications in biomedical, agricultural and cosmetic research.

How chitosan nanoparticles are made by ionic gelation, the parameters that control particle size, and their main R&D applications in delivery and beyond.