Characterization of PEEK biomaterials using the small punch test

IF 3.5 2区医学 Q2 ENGINEERING, BIOMEDICAL Journal of the Mechanical Behavior of Biomedical Materials Pub Date : 2011-10-01 Epub Date: 2011-04-22 DOI:10.1016/j.jmbbm.2011.04.014

David J. Jaekel , Daniel W. MacDonald , Steven M. Kurtz

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引用次数: 59

Abstract

The small punch test is widely used to characterize the ductility and fracture resistance in metals and ceramics, when only a small volume of material is available. This study was conducted to investigate the suitability of the small punch test for characterizing polyetheretherketone (PEEK) polymeric biomaterials for changes in material grade, crystallinity, and molding process. The small punch test reproducibly characterized the mechanical behavior of PEEK and was able to distinguish differences induced by molding process alterations and annealing. Peak load was most sensitive to changes in crystallinity, grade, molding process, and increased with increasing crystallinity, but decreased with the addition of image contrast materials. The ultimate displacement was negatively correlated with crystallinity. Molding process conditions had the greatest influence on metrics of the small punch test, when compared with the effects of annealing and the addition of a radiopacifier. The results of this study validate the small punch test as a repeatable method for measuring the mechanical behavior of PEEK biomaterials.

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聚醚醚酮生物材料的小穿孔试验表征

小冲孔试验被广泛用于表征金属和陶瓷的延展性和抗断裂性，当只有小体积的材料可用。本研究旨在探讨小冲孔试验在表征聚醚醚酮(PEEK)聚合物生物材料的材料等级、结晶度和成型工艺变化方面的适用性。小冲孔试验可再现地表征PEEK的力学行为，并能够区分由成型工艺改变和退火引起的差异。峰值负荷对结晶度、品位、成型工艺的变化最为敏感，随着结晶度的增加而增加，但随着造影剂的加入而降低。最终位移与结晶度呈负相关。与退火和添加放射性不透光剂的影响相比，成型工艺条件对小冲孔试验指标的影响最大。本研究的结果验证了小穿孔试验作为测量PEEK生物材料力学行为的可重复方法。

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

Journal of the Mechanical Behavior of Biomedical Materials 工程技术-材料科学：生物材料

CiteScore

7.20

自引率

7.70%

发文量

505

审稿时长

46 days

期刊介绍： The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.