Abstract
Adapting the use of nanocellulose as a sorbent is currently considered an extremely pressing problem, as synthetic analogues, although perform their functions well, are often toxic and incapable of biodegradation. In addition, the production of such synthetic sorbents is quite expensive. Therefore, today the production and modification of nanocellulose in order to increase their absorption capacity is especially important. Furthermore, a number of new applications of nanocellulose have been presented in nanocomposites, Pickering emulsions, wood adhesives, wastewater treatment, and emerging biomedical technologies. The problems and possibilities of new materials based on nanocellulose are being actively discussed. In the course of this work, a composite based on nanocrystalline cellulose from buckwheat, characterized by high sorption properties, environmental safety, and low cost of production, was obtained. Modification of cellulose was carried out with lactic acid. Nine groups of nanocrystalline cellulose samples with different acid soaking times were synthesized, and the optimal time required for the complete grafting of the acid into cellulose was determined. The specific surface area of the composite material was calculated using the Congo red dye adsorption method. It has been found that the specific surface area of the modified composite is not inferior to the specific surface area of many synthetic adsorbents, and even surpasses them in terms of environmental and economic indicators.
Published Version
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