Abstract
Abstract In this paper, poly(ether ether ketone) (PEEK) scaffold was manufactured using the fused deposition modeling (FDM) technology with a modified platform. The effect of processing parameters of FDM on the porosity and compressive strength of PEEK scaffold with uniform pores (0.8 mm of diameter) was optimized through Taguchi methodology. With the determined parameters, four kinds of PEEK scaffolds with gradient pores (0.4–0.8 mm, 0.6–1.0 mm, 0.8–1.2 mm, and 1.2–2.0 mm) were manufactured. The scaffolds were investigated using scanning electron microscopy. The results showed that the pores of scaffolds were interconnected with rough surface, which can allow the attachment, migration, and differentiation of cells for bone forming. The tensile strength, compressive max strength, and compressive yield strength of scaffolds were between 18 and 35 MPa, 197.83 and 370.42 MPa, and 26 and 36 MPa, respectively. The mechanical properties of the scaffolds can satisfy the loading requirements of human bones. Therefore, the PEEK scaffolds have a potential to be used in tissue engineering as implants.
Highlights
In this paper, poly(ether ether ketone) (PEEK) scaffold was manufactured using the fused deposition modeling (FDM) technology with a modified platform
To improve the quality of FDM on the manufacturing of PEEK parts, some studies have been carried out to investigate the relationship between processing parameters and the mechanical properties
The porosity of the scaffolds varies from 47 to 59% and the compressive strength was in the range of 274–421 Melting temperature (°C) Tensile strength (MPa), showing that the parameters had an important effect on the porosity and mechanical properties of the scaffolds
Summary
Abstract: In this paper, poly(ether ether ketone) (PEEK) scaffold was manufactured using the fused deposition modeling (FDM) technology with a modified platform. The effect of processing parameters of FDM on the porosity and compressive strength of PEEK scaffold with uniform pores (0.8 mm of diameter) was optimized through Taguchi methodology. To improve the quality of FDM on the manufacturing of PEEK parts, some studies have been carried out to investigate the relationship between processing parameters and the mechanical properties. Deng et al [28] comprehensively investigated the relationship between the printing speed, layer thickness, and printing temperature on the tensile properties of PEEK Except those studies, the combination of computer-aided methods and processing parameters were adopted to improve the quality of FDM PEEK, including finite element analysis [29] and fuzzy proportion-integration-differention (PID) method [30]. The purposes were as follows: investigating the effect of FDM parameters on the mechanical properties of PEEK scaffolds with uniform pores using the Taguchi methodology; evaluating the relationship between the different gradient pores and the mechanical properties with the optimal processing parameters; and characterizing the morphology and the tensile fracture surface of PEEK scaffolds with gradient pores
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