volgens mij is er celluloselak en nitrocelluloselak.
google zegt er dit over:

the difference between cellulose and nitrocellulose is that cellulose is a polysaccharide containing many glucose units in parallel chains while nitrocellulose is a cotton-like material, made from cellulose by the action of nitric and sulphuric acids, used in the manufacture of explosives, collodion etc.

As nouns the difference between cellulose and nitrocellulose is that cellulose is a complex carbohydrate that forms the main constituent of the cell wall in most plants and is important in the manufacture of numerous products, such as paper, textiles, pharmaceuticals, and explosives while nitrocellulose is (organic compound) a cotton-like material, made from cellulose by the action of nitric and sulphuric acids, used in the manufacture of explosives, collodion etc.