The chemical interaction of high-nitrogen cellulose ether with acetic, propionic, butyric and isobutyric acids has been studied. The general laws and features of the electrophilic substitution of functional groups of cellulose nitroesters are revealed. The preferred directions of the chemical interaction of cellulose nitrate with carboxylic acid chlorides are established: O-acylation of nitrate and hydroxyl groups; O-acylation of the glucopyranose ring; O-acylation of the ether bond with depolymerization of the chain of an SC molecule; hydrolysis of nitrate groups; destruction of the chain of a macromolecule of nitric acid ester with the formation of water-soluble organic compounds. The structure, properties and possibilities of using synthesized mixed cellulose ethers were studied. Effective methods have been developed for the chemical modification of cellulose nitrates with carboxylic acid chlorides. The probable directions of the reaction of the interaction of cellulose nitrates with electrophilic reagents are predicted based on quantum-chemical calculations of point charges on the atoms of the reacting molecules. The reactivity of highly substituted cellulose nitrates in reactions with carboxylic acid chlorides has been established. The optimal conditions for the interaction of cellulose nitrates with carboxylic acid chlorides have been identified and a mathematical model of the reaction kinetics has been constructed. The possibility of a directed change in the composition of chemically modified cellulose nitrates depending on the synthesis conditions has been established. As a result of the combined use of physicochemical research methods, the chemical composition was determined and the structure of the synthesized compounds was determined: cellulose acetyl nitrates, cellulose propionyl nitrates, cellulose butyryl nitrates, and cellulose isobutyryl nitrates. Using gel chromatography, it was found that the molecular weight characteristics of the synthesized samples are directly dependent on the conditions of their synthesis. It was found that electrophilic substitution of the functional groups of cellulose nitrate proceeds more intensively in the pyridine medium.

The interaction of cellulose nitrate with chloranhydride of acetic acid was studied. As a result of physicochemical studies the most probable path ways of the reactions were established.

Reactions of high nitrogen-containing cellulose nitrate with a series of aliphatic alcohols are studied. In the course of physicochemical studies most probable pathways of chemical reaction were established. They include substitution of nitrate groups by alkoxy group, opening of glucopyranose ring with the addition of the fragment of alcohol by the free bonds formed and formation of the carbonyl group, and also saponification of nitrate groups while studying the process in alkaline medium.

The interaction cellulose nitrate with butyric acid chloride. As a result of physical and chemical studies have been established the most probable path of the flow of chemical reaction, namely the replacement of nitrate groups acyl radical, ring opening glyukopiranozy accession to the free bonds formed moiety butyric acid chloride acid, partial saponification of nitrate groups and depolymerization macromolecular chain modifiers nitrocellulose with by the formation of watersoluble organic products.