The aim of this study was to conduct artificial ageing tests on polymer-ceramic composites prepared from polyamide PA-12 polymer matrix for medical applications and three different variants of ceramic fillers: zirconia, alumina and cenospheres. Before ageing, the samples were subjected to ethyl oxide sterilization. The composite variants were prepared for 3D printing using the fused deposition modeling method. The control group consisted of unsterilized samples. Samples were subjected to artificial ageing in a high-pressure autoclave. Ageing conditions were calculated from the modified Hammerlich Arrhenius kinetic equation. Ageing was carried out in artificial saliva. After ageing the composites were subjected to mechanical (tensile strength, hardness, surface roughness) testing, chemical and structural (MS, FTIR) analysis, electron microscopy observations (SEM/EDS) and absorbability measurements.

Department of Biomedical Engineering Silesian University of Technology Akademicka 2A 44 100 Gliwice Poland

Faculty of Chemistry Department of Chemical Organic Technology and Petrochemistry Silesian University of Technology Krzywoustego 4 44 100 Gliwice Poland

Institute for Manufacturing Technologies of Ceramic Components and Composites University of Stuttgart 70569 Stuttgart Germany

IT4 Innovations VŠB Technical University of Ostrava 17 Listopadu 15 708733 Ostrava Poruba Czech Republic

Nanotechnology Centre CEET VŠB Technical University of Ostrava 17 Listopadu 15 708733 Ostrava Poruba Czech Republic

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