Effect of Zn-nanoHA concentration on the mechanical performance and bioactivity of 3D printed PEEK composites for craniofacial implants

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2022-08-08 DOI:10.1080/14658011.2022.2108986

Faisal Manzoor, A. Golbang, A. Mcilhagger, E. Harkin-jones, Daniel Crawford, E. Mancuso

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引用次数: 1

Abstract

ABSTRACT This study aims to investigate the mechanical performance and bioactive potential of polyetheretherketone (PEEK)-based composites. PEEK powder is mixed with up to 20 wt-% zinc doped nano-hydroxyapatite (ZnHA) powder to extrude filaments. Subsequently, 3D-printed samples are prepared via fused deposition modelling (FDM). Micro-Computed Tomography (µ-CT) analysis shows the distribution of ZnHA particles in extruded filaments. Fourier transform infrared spectroscopy (FTIR) confirms the functional groups in 3D-printed samples. The tensile testing results showed that at higher concentration of ZnHA, the strength and strain at failure decrease, while the elastic modulus increases within the acceptable range of human cortical bone. Bioactivity tests in simulated body fluid (SBF) for up to 14 days illustrate the formation of apatite precipitates on the composite samples’ surface compared to pure PEEK. Based on the results, it can be concluded that FDM 3D-printing of PEEK/ZnHA composites can be used effectively in manufacturing customised craniofacial/orthopedic implants.

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锌-纳米ha浓度对3D打印PEEK复合材料力学性能和生物活性的影响

摘要本研究旨在研究聚醚醚酮(PEEK)基复合材料的力学性能和生物活性潜力。PEEK粉末与高达20 wt-%的锌掺杂纳米羟基磷灰石(ZnHA)粉末混合以挤出长丝。随后，通过熔融沉积建模(FDM)制备3d打印样品。微计算机断层扫描(µ-CT)分析显示了锌ha颗粒在挤压细丝中的分布。傅里叶变换红外光谱(FTIR)证实了3d打印样品中的官能团。拉伸试验结果表明，在较高的ZnHA浓度下，破坏时的强度和应变降低，而弹性模量在人皮质骨的可接受范围内增加。在模拟体液(SBF)中进行长达14天的生物活性测试表明，与纯PEEK相比，复合样品表面形成磷灰石沉淀。基于结果，可以得出结论，PEEK/ZnHA复合材料的FDM 3d打印可以有效地用于制造定制颅面/骨科植入物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.