An Investigation of Atmospheric Pressure Plasma Coating Effect on Implant Surface

Abstract

Çıplak 316L paslanmaz çeliklerin (SS) sahip olduğu bioinert özellik, hücre ve dokularla zayıf etkileşim gösterebilmekte ayrıca bakteriyel sorunlar teşkil edebilmektedir. Atmosferik basınç plazmalar, implant materyalinde yüzey modifikasyonu sağlayarak protein ve hücre yapışmasını, biyouyumluluğu ve bakteri tutunma gibi özellikleri etkileyebilmektedir. Bu çalışmada, atmosferik plazma uygulamasının implant yüzeylerin morfoloji ve kimyası üzerine etkisi incelenmiştir. Bu amaçla, implant yüzeylere 30 s, 60 s ve 120 s boyunca helyum plazma ile modifiye edilmiştir. Uygulama sonrası yüzeylerin morfolojisi SEM ile karakterize edilmiştir. Plazma uygulama sonrası yüzeylerin su temas açısının değiştiği, özellikle 120 s plazma uygulama sonrası yüzey su temas açısının 10o olarak tespit edilmiştir. Modifiye yüzeylerin bakteri ile olan etkileşimleri Escherichia Coli (E.coli) ve Staphylococcus aureus (S.aureus) üzerinde test edilmiştir. Sonuçlara göre, atmosferik plazma modifikasyonu sonucu elde edilen hidrofilite özelliğin bakteri tutunmasını sınırladığı ve biyomedikal uygulamalar için yüksek potansiyel taşıdığı gözlemlenmiştir.

Keywords

• Atmospheric pressure plasma
• Surface modification
• 316L stainless steel
• Antifouling
• Implant

An Investigation of Atmospheric Pressure Plasma Coating Effect on Implant Surface

Abstract

The bioinert properties of bare 316L stainless steels (SS) can result in weak interactions with cells and tissues, as well as bacterial issues. Atmospheric pressure plasmas can modify the surface of implant materials, affecting properties such as protein and cell adhesion, biocompatibility, and bacterial attachment. In this study, the effect of atmospheric plasma application on the morphology and chemistry of implant surfaces was investigated. For this purpose, implant surfaces were modified using helium plasma for 30 s, 60 s, and 120 s. The morphology of the surfaces after the application was characterized using SEM. It was observed that the water contact angle of the surfaces changed after plasma treatment, with the water contact angle of the surface measuring 10° after 120 s of plasma application. The interactions of the modified surfaces with bacteria were tested on Escherichia coli (E. coli) and Staphylococcus aureus (S.aureus). According to the results, it was observed that the hydrophilicity obtained by atmospheric plasma modification limits bacterial adhesion and has high potential for biomedical applications.

Keywords

• Atmospheric pressure plasma
• Surface modification
• 316L stainless steel
• Antifouling
• Implant

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