ABSTRACT

Cellulose is the most abundant natural biopolymer and is readily available from renewable resources. Esteriied cellulose is a highly lexible material as its properties can be varied by controlling the type and amount of the ester substituents during the chemical manufacturing process. Some cellulose esters have been applied as optical ilms for decades by virtue of their excellent properties such as high transparency and heat resistance. The cellulose ester used is mainly cellulose acetate, while the applications are rather limited to photographic ilms and protective ilms.