20.500.12556/DKUM-94066 The effects of ozone sterilization on the chemical and mechanical properties of 3D-printed biocompatible PMMA Since ozone is highly corrosive, it can substantially affect the mechanical and chemical properties of the materials; consequently, it could affect the applicability of those materials in medical applications. The effect of ozone sterilization on the chemical and mechanical properties of additively manufactured specimens of biocompatible poly(methyl-methacrylate) was observed. FDM 3D-printed specimens of biocompatible PMMA in groups of five were exposed to high concentrations of ozone generated by corona discharge for different durations and at different ozone concentrations inside an enclosed chamber with embedded and calibrated ozone, temperature, and humidity sensors. A novel approach using laser-induced fluorescence (LIF) and spark-discharge optical emission spectrometry (SD-OES) was used to determine an eventual change in the chemical composition of specimens. Mechanical properties were determined by testing the tensile strength and Young’s modulus. A calibrated digital microscope was used to observe the eventual degradation of material on the surface of the specimens. SD-OES and LIF analysis results do not show any detectable sterilizationcaused chemical degradation, and no substantial difference in mechanical properties was detected. There was no detectable surface degradation observed under the digital microscope. The results obtained suggest that ozone sterilization appears to be a suitable technique for sterilizing PMMA medical devices. ozone sterilization poly(methyl-methacrylate) (PMMA) polymer oxidation personalized medical device environmentally friendly fused deposition modeling (FDM) ozonska sterilizacija polimerna oksidacija personalizirani medicinski pripomočki okolju prijazno modeliranje taljenega odlaganja true false true Multidisciplinary Digital Publishing Institute (MDPI) Angleški jezik Slovenski jezik https://www.mdpi.com/journal/micromachines © 2024 by the authors Članek v reviji 2025-07-30 11:04:39 2025-07-30 11:04:41 2025-07-31 03:13:32 0000-00-00 00:00:00 2024 0 0 16 str. iss. 4, [article no.] 472 Vol. 15 March 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-02-14 2024-03-27 2024-03-29 620.1:621.713.3 191144195 10.3390/mi15040472 2072-666X micromachines-15-00472-v2.pdf micromachines-15-00472-v2.pdf 1 CFC75983E044F1ED8DCB0787BBD754A7 028a6398aa863ca3ce0c32ab3d111e5fc1734ae2e6dcf46fbe5ccfd53a96c64e 7e13a1af-6d24-11f0-b54a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=194528 https://www.mdpi.com/2072-666X/15/4/472 0 842d04ee-6d24-11f0-b54a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=194529 Fakulteta za strojništvo 0 0 0