Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. chitin
8. chitosan

Anotations

Scope note:

A chitosan derivative with an amphoteric character that has the potential to improve paper strength and form films with a good barrier to gases and antibacterial activity. In conservation, it is used as a paper consolidant.