The effect of titanium dioxide modification on the copper powder bactericidal properties

• Autorzy: Rutkowska-Gorczyca Małgorzata , Molska Justyna , Grygier Dominika
• Języki publikacji: EN

Abstrakty

EN

The bactericidal and bacteriostatic effects of cop-per have been known for a long time. However, the coatings apart from biological activity should fulfil a number of other requirements, such as tightness, scratch resistance or aesthetic appearance. Researchers have been working on creating durable coatings meeting these requirements for a long time. Scientific research indicates a high interest in active coatings. Nanoscale additives are used, with the aim to modify the material’s performance at the atomic level. Composite coatings allow us to provide the materials multifunctionality, and in addition, can enhance their mutual action. There are many methods for creating such materials. One of the techniques of applying composite coatings is the Cold Spray method, in which the coating is made of a powder. The main purpose of the modification is to obtain a bactericidal and bacteriostatic effect, but also a durable and wear--resistant coating. The paper proposes modifications of copper powder with amorphous submicron titanium dioxide in order to increase its biological activity. The modified powder can be used to create coatings by various methods including thermal methods. The work presents a material analysis of Cu and TiO2powders and results of bactericidal tests carried out on a Cu-TiO2 composite powder. The experiment in-cluded Escherichia coli and Staphylococcus aureus. The studies have shown a positive effect of the addition of TiO2 on bactericidal properties against both Staphylococcus aureus (Gram-positive bacteria) and Escherichia coli (Gram-negative bacteria) when mixed with copper at 1:9 ratio.

Słowa kluczowe

EN

composite powder; Cu; TiO2; bactericidal tests

• Wydawca: Polish Society for Biomaterials in Cracow
• Czasopismo: Engineering of Biomaterials
• Rocznik: 2019
• Tom: Vol. 22, no. 149
• Strony: 15--19
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., zdj.

Twórcy

autor

Rutkowska-Gorczyca Małgorzata

• Wroclaw University of Science and Technology, Department of Materials Science, Strength and Welding Technology, ul. Łukasiewicza 7-9, 50-371 Wrocław, Poland

autor

Molska Justyna

• Wroclaw University of Science and Technology, Department of Vehicle Engineering, ul. Braci Gierymskich 164, 51-640 Wrocław, Poland

autor

Grygier Dominika

• Wroclaw University of Science and Technology, Department of Materials Science, Strength and Welding Technology, ul. Łukasiewicza 7-9, 50-371 Wrocław, Poland

Bibliografia

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• [5] Chen S., Guo Y., Zhong H., Chen S., Li J., Ge Z.: Synergistic antibacterial mechanism and coating application of copper/titanium dioxide nanoparticles. Chemical Engineering Journal 256 (2014) 238-246.
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• [7] Rtimi S., Oualid B., Pulgarin C., Lavanchy J., Kiwi J.: Growth of TiO2/Cu films by HiPIMS for accelerated bacterial loss of viability. Surface & Coatings Technology 232 (2013) 804-813.
• [8] Rtimi S., Pulgarin C., Baghriche O., Kiwi J.: Accelerated bacterial inactivation obtained by HIPIMS sputtering on low cost surfaces with concomitant reduction in the metal / semiconductor content. RSC Advances 3(32) (2013) 13127-13130.
• [9] Winnicki M., Małachowska A., Baszczuk A., Rutkowska-Gorczyca M., Kukla D., Lachowicz M., Ambroziak A.: Corrosion protection and electrical conductivity of copper coatings deposited by low-pressure cold spraying. Surface & Coatings Technology 318 (2017) 90-98.
• [10] Baszczuk A., Jasiorski M., Borak B., Wódka J.: Insights into the multistep transformation of titanate nanotubes into nanowires and nanoribbons. Materials Science-Poland 34(4) (2016) 691-702.
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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).