Celluloid (nitrated cellulose with camphor) is not the only transformation of cellulose into a plastic. https://en.wikipedia.org/wiki/Cellulose_acetate https:/

Celluloid (nitrated cellulose with camphor) is not the only transformation of cellulose into a plastic. https://en.wikipedia.org/wiki/Cellulose_acetate https://en.wikipedia.org/wiki/Cellulose_acetate dates back to the 19th century; tough enough to be used for films and eyeglass frames. Production involves some chems: "cellulose [pulp] is reacted with acetic acid and acetic anhydride in the presence of sulfuric acid." Acetic anhydride is restricted in some countries because it's used in making heroin.