A comparative study of isolation conditions,morphology, and properties of cellulose obtained from the stalks of cereals and oil-yielding plants

The impact of features of the capillary porous structure of rape and soya stalks (as compared with those of rye straw) on the nitric acid/alkaline delignification process allowing, in particular, isolation of radiation-free cellulose and nitrolignin from radionuclide-contaminated plant material, is examined. The method for adjustment of delignification conditions on changing from the traditional annual plant raw material (rye straw) to a material with a more dense structure of the plant tissue is discussed. The morphological structure and paper-forming properties of cellulose isolated from the stalks of cereals are shown to be identical with the respective indices for cellulose isolated from the stalks of oil-bearing plants.