Physicochemical features of formation and morphology of submicron honeycomb-structure nitrocellulose films with hexagonal cell symmetry were examined.

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.

Controlled radical polymerization of styrene in toluene by the RITP method in the presence of I 2 and radical initiators, 2,2′-azobis(isobutyronitrile) and benzoyl peroxide, was studied.

On the basis of carboxylated nitrocellulose were formed ordered micronets containing nanoparticles of nickel in their surface layer. The optimal conditions for a uniform coating with nickel of the polymer net film are as follows: activating the surface with solutions of tin(II) and palladium chlorides for 30–60 s and the action of the nickel developer for at least 3 min at 20°C.

Sorption of Al3+ and Cr3+ cations from sulfuric acid solutions with a cellulose phosphate-based fibrous sorbent was examined.

The kinetics of the formation of cationic starch ethers under the action of 3-chloro-2-hydroxypropyltrimethylammonium chloride is studied in relation to the reactant molar ratio, temperature, and concentration of the starch suspension. Comparative data on how the content of the introduced catoinic groups depends on the origin of native starch are presented. The efficiency of starch cationization and the physicochemical properties of the synthesized samples are examined by chemical analysis, scanning electron microscopy, X-ray diffraction analysis, and thermal gravimetric analysis.

Possibility of obtaining cellulose-iron(II, III) oxide composites with various component ratios was studied. The specific magnetization of the material was determined in relation to the mass fraction of the magnetic component in the composite.

Sulfo esters of cellulose, dextran, starch, and amylopectin with a degree of substitution equal to 0.1–1.1 were prepared in the system constituted by sodium pyrosulfate and dimethyl sulfoxide. The intrinsic viscosity of aqueous solutions of sulfo polysaccharides was determined, and their anticoagulant activity was evaluated.

The copolymerization of styrene and 1-hexene with the TiCl 4 -Al(C 6 H 13 ) 3 · Mg(C 6 H 13 ) 2 catalytic system has been investigated. The microstructure of polymer chains, molecular-mass characteristics, and thermophysical properties of the resulting copolymers have been studied. These copolymers contain 15 to 65 mol % styrene and mostly consist of isotactic polystyrene and poly(1-hexene) blocks.

A new procedure was developed for preparing carbon films with magnetic metal nanoparticles by thermolysis of a polymer precursor. The conditions for preparing carbon films with required surface concentration of the metal nanoparticles and hence with dielectric or metallic properties were determined.

The influence exerted by copolymers of the C9 fraction of liquid pyrolysis products of petroleum raw materials with maleic anhydride and by their esterification products, added to paper pulp, on the main paper properties was examined.

Radical copolymerization of the C9 hydrocarbon fraction of liquid pyrolysis products with maleic anhydride was studied. The influence of reaction conditions on the copolymer yield, its molecular mass, and maleic anhydride content was elucidated. Hydrophilic products showing promise as modifying additives to paper stock, binding agents, dispersants, and compatibilizers were prepared.

Esterification of viscose fibres with aqueous solutions of orthophosphoric acid and urea at different ratios of components was investigated. It was shown that in phosphorylation of cellulose with these solutions, one-substituted cellulose phosphates are formed and a side process of formation of cellulose carbamates takes place together with accumulation of phosphate groups. A decrease was found in the mechanical strength of the phosphorylated cellulose preparations and the degree was a function of the concentration of orthophosphoric acid and urea as the phosphorylating solution. Phosphorus-containing viscose fibres (up to 0.5 mmole/g of phosphate groups) obtained in solutions of orthophosphoric acid and urea with a 0.25–0.63 and 3.33–4.17 M concentration have the most satisfactory mechanical properties and stability in phosphate buffer with pH 7.5.