acetylcellulose

Cellulose acetate, also known as acetylcellulose, is a thermoplastic polymer derived from cellulose. It is produced by treating cellulose with acetic anhydride and acetic acid in the presence of a catalyst. This process esterifies the hydroxyl groups on the cellulose backbone, replacing them with acetate groups. The degree of acetylation, meaning the number of acetate groups attached per anhydroglucose unit, can be controlled to modify the properties of the resulting polymer.

Cellulose acetate is a versatile material with a range of applications. It is known for its clarity, toughness, and good electrical insulating properties. Historically, it was a significant material in the film industry as a base for photographic and motion picture films, although it has largely been replaced by polyester due to its flammability. It is still used in some specialty films and photographic applications.

Other common uses for cellulose acetate include the production of cigarette filters, where its fibrous structure effectively captures tar and nicotine. It is also employed in textiles as a synthetic fiber, often blended with other natural or synthetic fibers, to create fabrics with a silky feel and good drape. Furthermore, cellulose acetate finds application in eyeglass frames, tool handles, and as a plastic coating for various products. Its biodegradability, compared to many petroleum-based plastics, is also a notable characteristic.