PROPERTIES AND STRUCTURE OF MOLYBDENUM-CONTAINING BIOCIDE GLAZES

UDC 666.295.016.5

 

Levitskii Ivan Adamovich – DSc (Engineering), Professor, Professor, the Department of Glass and Ceramics Technology. Belarusian State Technological University (13а, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: levitskii@belstu.by

Dyadenko Mikhail Vasil’yevich – PhD (Engineering), Associate Professor, Head of Research Department. Belarusian State Technological University (13а, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: dyadenko@belstu.by

Kucherova Dar’ya Vyacheslavovna – external doctorate student. Belarusian State Technological University (13а, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: kucherova.11.09@internet.ru

 

DOI: https://doi.org/ 10.52065/2520-2669-2023-271-2-8 (In Russian).

 

Key words: : Levitskii I. A., Dyadenko M. V., Kucherova D. V. Properties and structure of molybdenum-containing biocide glazes. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2023, no. 2 (271), pp. 57–64. DOI: 10.52065/2520-2669-2023-271-2-8 (In Russian).

Abstract

The results of studies on the synthesis of molybdenum-containing glaze coatings with antibacterial properties used in the production of ceramic tiles are presented. A multicomponent raw material composition system was studied, including glass frit of the Na2O – K2O – CaO – MgO – Al2O3 – B2O3 – SiO2 system, dolomite and molybdenum oxide with a constant content of feldspar, quartz sand, refractory clay and kaolin. White muffled glaze coatings were obtained by single firing at a temperature of (1180 ± 5)°C and a duration of (55 ± 2) minutes. The dependences of the coating properties on technological factors (degree of grinding, temperature-time condition, etc.) are established. The decorative characteristics of the obtained coatings, their physico-chemical properties in relation to the structure and phase composition are investigated. The antibacterial activity of the coatings against the test strains Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538 was determined. Phase transitions in glaze raw mixtures during their heat treatment are investigated. The features of the formation of the coating structure by IR spectroscopy are studied. The phase composition and microstructure of the glazes are determined. The possibility of using MoO3 for the synthesis of silenced glaze biocidal coatings for porcelain stoneware has been established.

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29.06.2023