DEVELOPMENT AND RESEARCH OF PACKAGING PAPER MODIFIED BY TITANIUM DIOXIDE NANOPARTICLES

Abstract

Research is conducted on the development of paper packaging materials with antibacterial properties using titanium dioxide nanoparticles. Titanium dioxide nanoparticles are synthesized by the hydrolysis of titanium tetrachloride in an alkaline medium, adjusting the pH value with an aqueous solution of ammonia at a temperature of 30 to 60°C. The influence of reaction conditions on the synthesis of titanium dioxide nanoparticles and the pH of the medium are studied and the optimal synthesis conditions are found. The processing parameters of paper packaging materials with aqueous solutions of titanium dioxide nanoparticles, which give them antimicrobial properties, are determined. Using electron-scanning microscopy and energy dispersive microanalysis, it is shown that untreated packaging paper contains 64.69% of C and 35.31% of O; after modification with a solution of titanium dioxide nanoparticles, titanium dioxide particles, which are distributed quite unevenly depending on the initial concentration of titanium dioxide nanoparticles, form on 16.46–21.14% of the surface of the treated paper. The packaging materials modified by the proposed composition show strong resistance to the action of microorganisms. The use of the developed antimicrobial food packaging reduces losses and preserves the quality and safety of food products during transportation, storage, and sales.