In our study we used holocelluloses from sugar beet and bagasse for film preparation. Films from sugar
beet holocellulose have better mechanical properties than from bagasse holocellulose. By subsequent
carboxymethylation of bagasse holocellulose, films with better properties were produced. Specimens
prepared from combined sugar beet and bagasse carboxymethylated holocellulose had the best mechanical
properties. The results could be explained by the ratios of cellulose, arabinan, polygalacturonan and
xylan content in individual films, based on the elemental analysis data. The use of microwaves to prepare
holocellulose film speed up the process, but negatively affected the mechanical properties. Lignin
content of the sugar beet holocellulose and bagasse samples was low and did not affect the mechanical
properties. Both types of agricultural by-products could be used for preparation of composite film with
high strength and stiffness suitable for broad range of applications