Nitraattikelmu
Nitraattikelmu, also known as nitrocellulose film or celluloid, is a transparent plastic material derived from nitrated cellulose. It was one of the first flexible plastics developed and found widespread use in the late 19th and early 20th centuries, particularly in photography and early cinema.
The production of nitraattikelmu involves treating cellulose with a mixture of nitric and sulfuric acids. This
However, nitraattikelmu has significant drawbacks. It is highly flammable due to its high nitrogen content, posing
Despite its flammability and instability, nitraattikelmu was the dominant film base for many decades. Its archival