NDLI: The Direct 3D Printing of Functional PEEK/Hydroxyapatite Composites via a Fused Filament Fabrication Approach

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The Direct 3D Printing of Functional PEEK/Hydroxyapatite Composites via a Fused Filament Fabrication Approach

Content Provider	MDPI
Author	Krzysztof, Rodzeń Sharma, Preetam McIlhagger, Alistair Mokhtari, Mozaffar Dave, Foram Tormey, David Sherlock, Richard Meenan, Brian Boyd, Adrian
Copyright Year	2021
Description	The manufacture of polyetheretherketone/hydroxyapatite (PEEK/HA) composites is seen as a viable approach to help enhance direct bone apposition in orthopaedic implants. A range of methods have been used to produce composites, including Selective Laser Sintering and injection moulding. Such techniques have drawbacks and lack flexibility to manufacture complex, custom-designed implants. 3D printing gets around many of the restraints and provides new opportunities for innovative solutions that are structurally suited to meet the needs of the patient. This work reports the direct 3D printing of extruded PEEK/HA composite filaments via a Fused Filament Fabrication (FFF) approach. In this work samples are 3D printed by a custom modified commercial printer Ultimaker 2+ (UM2+). SEM-EDX and µCT analyses show that HA particles are evenly distributed throughout the bulk and across the surface of the native 3D printed samples, with XRD highlighting up to 50% crystallinity and crystalline domains clearly observed in SEM and HR-TEM analyses. This highlights the favourable temperature conditions during 3D printing. The yield stress and ultimate tensile strength obtained for all the samples are comparable to human femoral cortical bone. The results show how FFF 3D printing of PEEK/HA composites up to 30 wt% HA can be achieved.
Starting Page	545
e-ISSN	20734360
DOI	10.3390/polym13040545
Journal	Polymers
Issue Number	4
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2021-02-12
Access Restriction	Open
Subject Keyword	Polymers Manufacturing Engineering Additive Manufacturing Advanced Composite Materials 3d Printing Fused Filament Fabrication Peek Polyetheretherketone Hydroxyapatite
Content Type	Text
Resource Type	Article

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