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Investigating the Effect of Adding Copper Oxide/Calcium Carbonate Nanocomposite on the Melting Point and Antibacterial Properties of the Tile Glaze

Sabbaghei, Homa | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57331 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Nemati, Ali; Khachatourian, Adrine Malek
  7. Abstract:
  8. Considering the importance of producing antibacterial glazes, the effect of adding copper oxide/calcium carbonate nanocomposite to tile glaze has been investigated in this research. Copper oxide/calcium carbonate nanocomposite was synthesized using the combustion sol-gel method. The structure of the nanocomposite was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Finally, nanocomposites with two different molar percentage ratios of copper oxide: calcium carbonate were synthesized, and various percentages of these nanocomposites were added to the glaze slurry. Ultimately, the antibacterial effects of the resulting samples were assessed, which displayed a remarkable 99.99% antibacterial effect. The melting point and firing conditions of the glaze were evaluated by simultaneous thermal analysis (STA). The observations showed that the addition of nanocomposite reduced the melting point of the glaze by approximately 20 to 30 ℃. Results of Vickers microhardness testing revealed that the nanocomposite increased the glaze hardness from 570.087 to a maximum of 642.057 HV. Furthermore, melting glaze viscosity increased with the rise in nanocomposite percentage from 4% to 8%. The main advantage of this antibacterial glaze is that the antibacterial agent is embedded within the substrate, ensuring sustained and higher efficiency compared to antibacterial coatings
  9. Keywords:
  10. Calcium Carbonate Nanoparticles ; Melting Point ; Antibacterial Properties ; Antibacterial Glaze ; Copper Oxide/Calcium Carbonate Nanocomposite ; Sol-Gel Autocombustion Method ; Thermal Analysis

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