Abstract
High-performance polymer three-dimensional printing is becoming more popular for producing unique parts suitable for different applications. It has been utilized extensively in biomedical applications such as dental prosthetics, surgical equipment, and implants. However, the performance of the material is significantly influenced by its surface qualities, particularly in aspects of its adhesion and biocompatibility. This study involves the fabrication of PEEK specimens S1, S2, S3, and S4 with different printing parameters such as layer height of 0.10 and 0.15 mm and printing speed of 20 and 25 mm/s using a fused deposition modeling process. The surface roughness of the fabricated specimens is measured using atomic force microscopy. The results showed that the printing parameters significantly impact the surface roughness of the PEEK specimens. The surface roughness of specimen S3, printed at a layer height of 0.15 mm and a speed of 20 mm/s, has a low roughness value of 0.017 μm, which is considerable in comparison to the other specimens. In addition to the measurement of surface roughness from roughness profile, the force curve separation graph was plotted and the adhesion force values were calculated for all the specimens to determine the interlayer bonding strength.
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