A novel infrared radiant glaze exhibiting antibacterial and antifungal functions

Abstract

Infrared radiant powder was synthesized by conventional ceramic processing techniques by using Fe₂O₃, MnO₂, CuO, Co₂O₃ and kaolin as raw materials. A novel infrared radiant glaze was developed by introducing the infrared radiant powder into glazing as a functional additive. Infrared radiant characteristics of the powder and the glaze were investigated. The optimum content of infrared radiant powder in glazing was ascertained to be 5%. The infrared radiant glaze exhibits significant antibacterial and antifungal functions due to the thermal effect of infrared radiation. Antibacterial percentages of the glaze reach 91%–100% when Escherichia coli, Staphylococcus aureus and Bacillus subtilis are used as model bacterium respectively, while antifungal percentage of the glaze exceeds 95% when Penicillum citrinum is used as model fungus.

Keywords

glaze / infrared radiation / thermal effect / antibacterial and antifungal functions

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