Cellulosetriacetaat

Cellulosetriacetaat is a thermoplastic polymer derived from cellulose. It is produced by the esterification of cellulose with acetic anhydride, typically in the presence of a catalyst. This process introduces acetate groups onto the cellulose backbone, altering its properties. Cellulosetriacetaat is known for its good clarity, toughness, and resistance to light and weathering. It is also biodegradable, which is an attractive characteristic for certain applications.

Historically, cellulosetriacetaat was widely used in photographic film bases, replacing flammable cellulose nitrate. Its excellent optical properties and dimensional stability made it ideal for this purpose. It has also found applications in textiles as acetate fibers, offering a silk-like drape and feel. Other uses include eyeglass frames, cigarette filters, and as a coating for various surfaces. While newer polymers have replaced it in some areas, cellulosetriacetaat remains a valuable material due to its combination of performance and environmental profile. Its production involves careful control of the degree of esterification to achieve the desired material properties.