Experimental investigation on the tribo-mechanical behavior of PMMA reinforced by solid lubricant filler for dental implant applications

IF 1.4 4区物理与天体物理 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY AIP Advances Pub Date : 2024-09-09 DOI:10.1063/5.0225107

Mohamed S. Abdo, Muhammad A. Shar, Ahmed Fouly, Mushtaq A. Dar, Hany S. Abdo

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Abstract

This study investigates the enhancement of mechanical and tribological behavior in polymethyl methacrylate (PMMA) composites reinforced with graphene oxide (GO) as a solid lubricant filler for advanced biomedical applications, particularly dental implants. PMMA/GO composites were prepared with varying weight percentages of GO (0, 0.2, 0.5, 0.7, and 1 wt. %) to assess their impact on material performance. A noteworthy improvement in both tensile strength and Young’s modulus was detected, reaching up to 141% and 10.6%, respectively, at optimized GO loadings of 1%. Microstructural analysis utilizing scanning electron microscopy for the worn surface revealed enhanced dispersion and interfacial adhesion between GO and the PMMA matrix, reinforcing mechanical coherence. Tribological properties also demonstrated enhancement, with PMMA composites containing 1 wt. % GO exhibiting optimal mechanical and tribological characteristics compared to lower weight fractions. Moreover, microscopic examination revealed a shift in the wear mechanism of the PMMA-GO composite, which was attributed to the lower friction coefficient obtained by GO integration.

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固体润滑剂填充物增强的 PMMA 在牙科植入物应用中的三重力学行为实验研究

本研究探讨了用氧化石墨烯（GO）作为固体润滑剂填料增强聚甲基丙烯酸甲酯（PMMA）复合材料的机械和摩擦学性能，用于先进的生物医学应用，尤其是牙科植入物。我们制备了不同重量百分比（0、0.2、0.5、0.7 和 1 重量百分比）的 PMMA/GO 复合材料，以评估它们对材料性能的影响。拉伸强度和杨氏模量均有显著提高，在 GO 的优化负载量为 1%时，拉伸强度和杨氏模量分别提高了 141% 和 10.6%。利用扫描电子显微镜对磨损表面进行的微观结构分析表明，GO 和 PMMA 基体之间的分散性和界面粘附性得到了增强，从而加强了机械一致性。摩擦学特性也得到了增强，与较低重量分数相比，含有 1 重量百分比 GO 的 PMMA 复合材料表现出最佳的机械和摩擦学特性。此外，显微镜检查显示，PMMA-GO 复合材料的磨损机制发生了变化，这归因于 GO 集成降低了摩擦系数。

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来源期刊

AIP Advances NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

2.80

自引率

6.20%

发文量

1233

审稿时长

2-4 weeks

期刊介绍： AIP Advances is an open access journal publishing in all areas of physical sciences—applied, theoretical, and experimental. All published articles are freely available to read, download, and share. The journal prides itself on the belief that all good science is important and relevant. Our inclusive scope and publication standards make it an essential outlet for scientists in the physical sciences. AIP Advances is a community-based journal, with a fast production cycle. The quick publication process and open-access model allows us to quickly distribute new scientific concepts. Our Editors, assisted by peer review, determine whether a manuscript is technically correct and original. After publication, the readership evaluates whether a manuscript is timely, relevant, or significant.