engleski

STERILIZATION OF WOODEN ARTIFACTS BY APPJ

In this work a cold atmospheric pressure plasma jet (APPJ) for sterilization of wooden artifacts is used. APPJ is rich of cold reactive species responsible for treatment of surfaces without thermal damage [1, 2]. This research includes the application of a plasma jet for surface treatment of various wooden artifacts in terms of sterilization of microorganisms at the surfaces. This method will complement standard techniques of sterilization/disinfection based on using hazardous chemicals, vacuum or gamma rays or using of chemical solvents. This method is tested on wooden artifacts covered with golden layer which was infected with Coniophora puteana and using Ar, He and Ar/O2 gasses for APPJ. The plasma processing is monitored with IR camera and optical emission spectroscopy as a versatile tool for plasma processes monitoring [3-5]. It was found that Ar APPJ appeared as most promising candidate for sterilization of wooden articats as fungi did not survived the treatment making it comparable to standard techniques. The advantage of this method is the fact that surface of the artifact did not survived any damage what was not the case for standard treatment. Acknowledgements: This work is mainly a part of PlasmaArt project supported by Adris Foundation and Croatian Science Foundation under project IP-11-2013- 2753. References: [1] M. Laroussi, T. Akan, Plasma Process. Polym. 2007, 4, 777 [2] R. Zaplotnik, M. Bišćan, N. Krstulović, D. Popović, and S. Milošević, Plasma Sources Sci. Technol. 24 (2015) 054004 [3] D. Vujošević, M. Mozetič, U. Cvelbar, N. Krstulović and S. Milošević, J. Appl. Phys. 101 (2007) 103305 [4] Nikša Krstulović, Irena Labazan, Slobodan Milošević, Uroš Cvelbar, Alenka Vesel and Miran Mozetič, J. Phys. D: Appl. Phys. 39 (2006) 3799–3804 [5] A. Vesel, M. Mozetic, A. Hladnik, J. Dolenc, J. Zule, S. Milosevic, N. Krstulovic, M. Klanjšek-Gunde and N. Hauptmann, J. Phys. D: Appl. Phys. 40 (2007) 3689–3696

Plasma tretamnet, atmospheric pressure plasma jet, wooden artifacts, plasma sterilization of wooden artifacts

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