Siberian Federal University

Due to the rapid pace of development of new areas of application of cellulose nitrates (CNs), as well as the search for and justification of alternative sources of cellulose for them, the research towards the synthesis of CNs from the national types of plant raw materials is extremely relevant. Miscanthus sacchariflorus var. Soranovskii is the most promising raw material in this direction. This work describes the preparation of an enlarged CN sample obtained from cellulose with a high degree of polymerization of 1550, isolated by the nitric-acid method. The nitration was carried out according to the sulfuric-acid method generally accepted in the world practice under the same conditions to obtain six CN samples with the following properties: 11.18–11.52 % nitrogen content, 106–129 mPa•s viscosity, and 76–80 % solubility in mixed alcohol/ester. The yield of CNs was within a narrow range of 140–143 %. By mixing the six samples, an enlarged CN sample weighing 120 g with the required characteristics was obtained: 11.19 % nitrogen content, 117 mPa•s viscosity, and 79 % solubility in mixed alcohol-ester, with 100 % solubility in acetone. The statistical processing of the obtained results by the Romanovsky criterion established that the obtained experimental data were acknowledged to be significant at 0.05. The morphological features of the structure of the CN fibers were revealed scanning electron microscopy. Combined TGA/DTA analys methods confirmed the high thermal stability and high-energy nature of CNs