Details

Autor(en) / Beteiligte

• Kumar, Ranvijay
• Singh, Gurminder
• Chinappan, Amutha
• Ghomi, Erfan Rezvani
• Singh, Sunpreet
• Sandhu, Kamalpreet
• Ramakrishna, Seeram
• Narayan, Roger
• Katakam, Prakash

Titel

On Mechanical, Physical, and Bioactivity Characteristics of Material Extrusion Printed Polyether Ether Ketone

Ist Teil von

• Journal of materials engineering and performance, 2023-07, Vol.32 (13), p.5885-5894

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• High-performance polyether ether ketone (PEEK) thermoplastic is considered to be one of the most desirable materials for its intended biomedical implications, including oral implantology, prosthodontics, dental implants, and orthopaedics. Therefore, the processing of PEEK through material extrusion (ME) as a 3D printing process has been preferred due to its affordability, better process parameters, and mass customization. In the present study, attempts have been made to study the effects of various input process parameters of an in-house modified ME system on tensile strength, surface finish, and bioactivity. Underlining the scientific importance of input process parameters of ME, including nozzle temperature (Nt), printing speed (Ps), layer thickness (Lt), and build-platform temperature (Bt), their effects on the aforementioned characteristics of 3D printed PEEK specimens have been studied through employing Taguchi’s statistical analysis. The in-vitro cell viability test has been performed using Sprague–Dawley rat bone marrow-derived cells for 21 days. In addition to this, Scanning electron microscopic analysis has also been performed at various stages of this experimental study for supporting micro-characterization. This study indicated that the selected input process parameters strongly influence the tensile strength and surface finish of the as-printed specimens. The optimized print setting advised by the genetic algorithm (GA) included: Nt-440 °C, Ps-10 mm/min, Lt-0.1 mm, and Bt-270 °C. Further, the in-vitro results confirmed the bioactivity of the printed PEEK specimens with the tendency of cell viability. The novelty of the work is to develop a statistical model between ME parameters for PEEK between surface finish and tensile strength and to verify the bioactivity of the printed parts.