Effect of CaO on the dissolution property, surface zeta potential and antibacterial properties of ZnO–Na2O–B2O3–SiO2 glass system

• Published in: Hanʼguk Seramik Hakhoe chi 2024, 61(6), 415, pp.982-992
• Main Authors: Hwang, Minseong, Ryu, Bongki, Chung, Jaeyeop, Kim, Youngseok, Kim, Daesung
• Format: Article
• Language: English
• Subjects: Ceramics; Chemistry and Materials Science; Composites; Glass; Materials Science; Natural Materials; Original Article; 재료공학
• ISSN: 1229-7801; 2234-0491; 2334-0491
• DOI: 10.1007/s43207-024-00408-7

In this study, we analyzed the correlation between the glass composition and properties of ZnO-containing borosilicate glasses. 20Na 2 O–30ZnO– x B 2 O 3 –(50- x )SiO 2 ( x  = 10, 20, 30, 40 mol%) glasses were prepared to analyze the relationship between the dissolution characteristics and antibacterial properties. Na 2 O was substituted with 5 and 10 mol% of CaO in 20Na 2 O–30ZnO–10B 2 O 3 –40SiO 2 and 20Na 2 O–30ZnO–40B 2 O 3 –10SiO 2 glasses to determine the relationship between the zeta potential and antibacterial properties. More Zn 2+ ions were released in the B 2 O 3 -rich composition than that the SiO 2 -rich composition. The antibacterial activity improved with increasing B 2 O 3 concentration. The surface zeta potentials of the glass with CaO became more positive, and the antibacterial activity improved dramatically. The composition with the lowest SiO 2 /B 2 O 3 ratio exhibited the highest dissolution rate and 99.9% antibacterial activity. In addition, 10CaO–10Na 2 O–30ZnO–40SiO 2 –10B 2 O 3 glass showed 99.9% antibacterial activity, despite the limited release of Zn 2+ ions. Hence, it was deduced that the antibacterial activity could be improved by controlling the surface zeta potential of the glasses.