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Interactive Molecular Model Assembly with 3D Printing
Published on: August 13, 2020
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A comprehensive characterization of 3D printable poly ether ketone ketone
Nidhi Ojha1, Sumodh Kumar1, M R Ramesh1
1Mechanical Engineering, National Institute of Technology, Karnataka, Surathkal, India.
Journal of the Mechanical Behavior of Biomedical Materials
|November 26, 2023
Summary
This study characterizes 3D printed polyether ketone ketone (PEKK) biomaterials. Annealing PEKK significantly improved its mechanical properties, shape memory, and reduced voids, enhancing its potential for biomedical applications.
Area of Science:
- Biomaterials Science
- Polymer Science
- Additive Manufacturing
Background:
- Polyether ketone ketone (PEKK) is a promising biomaterial for 3D printing.
- Characterizing PEKK's properties is crucial for optimizing its use in biomedical applications.
Purpose of the Study:
- To comprehensively characterize 3D printable polyether ketone ketone (PEKK) filaments and printed parts.
- To investigate the effects of annealing on the microstructure, mechanical properties, and shape memory behavior of 3D printed PEKK.
Main Methods:
- Extrusion of PEKK filaments from granules.
- 3D printing of PEKK samples using optimized parameters.
- Characterization using SEM, XRD, DMA, and tensile testing.
- Annealing of printed samples at 200 °C and 250 °C.
Main Results:
- Extruded PEKK filaments were amorphous with good printability.
- As-printed samples showed seamless layer adhesion but improper bead consolidation.
- Annealing improved void consolidation, crystallinity, storage modulus, and tensile properties.
- Annealed samples exhibited significantly enhanced shape memory properties (shape fixity and recovery).
Conclusions:
- Annealing is an effective post-processing method to improve the quality and performance of 3D printed PEKK.
- Optimized PEKK via annealing shows potential for advanced biomedical applications requiring superior mechanical and shape memory characteristics.
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