Eiméar O’donnell
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Eiméar O’donnell has a total of 9 co-authors. Here are the top co-authors by number of shared publications:
- Adam Strachota
Czech Academy of Sciences Heyrovského nám. 2
1 shared publication - Adrian R. Boyd
School of Engineering, University of Ulster, York Street, Belfast BT15 1ED, UK
1 shared publication - Alistair McIlhagger
School of Engineering, Ulster University, York Street, Belfast BT15 1ED, UK
1 shared publication - Beata Strachota
Czech Academy of Sciences Heyrovského nám. 2
1 shared publication - Brian J. Meenan
School of Engineering, Ulster University, Belfast, U.K.
1 shared publication - Frances Hasson
School of Engineering Ulster University Belfast Northern Ireland UK
1 shared publication
Latest Publications
- Open Access
Advanced 3D Printing of Polyetherketoneketone Hydroxyapatite Composites via Fused Filament Fabrication with Increased Interlayer Connection
Additively manufactured implants, surgical guides, and medical devices that would have direct contact with the human body require predictable behaviour when stress is applied during their standard operation. Products built with Fused Filament Fabrication (FFF) possess orthotropic characteristics, thus, it is necessary to determine the properties that can be achieved in the XY- and Z-directions of printing. A concentration of 10 wt% of hydroxyapatite (HA) in polyetherketoneketone (PEKK) matrix was selected as the most promising biomaterial supporting cell attachment for medical applications and was characterized with an Ultimate Tensile Strength (UTS) of 78.3 MPa and 43.9 MPa in the XY- and Z-directions of 3D printing, respectively. The effect of the filler on the crystallization kinetics, which is a key parameter for the selection of semicrystalline materials suitable for 3D printing, was explained. This work clearly shows that only in situ crystallization provides the ability to build parts with a more thermodynamically stable primary form of crystallites.
Open AccessAdvanced 3D Printing of Polyetherketoneketone Hydroxyapatite Composites via Fused Filament Fabrication with Increased Interlayer Connection
Additively manufactured implants, surgical guides, and medical devices that would have direct contact with the human body require predictable behaviour when stress is applied during their standard operation. Products built with Fused Filament Fabrication (FFF) possess orthotropic characteristics, thus, it is necessary to determine the properties that can be achieved in the XY- and Z-directions of printing. A concentration of 10 wt% of hydroxyapatite (HA) in polyetherketoneketone (PEKK) matrix was selected as the most promising biomaterial supporting cell attachment for medical applications and was characterized with an Ultimate Tensile Strength (UTS) of 78.3 MPa and 43.9 MPa in the XY- and Z-directions of 3D printing, respectively. The effect of the filler on the crystallization kinetics, which is a key parameter for the selection of semicrystalline materials suitable for 3D printing, was explained. This work clearly shows that only in situ crystallization provides the ability to build parts with a more thermodynamically stable primary form of crystallites.