Experimental investigation on the tribo-mechanical behavior of PMMA reinforced by solid lubricant filler for dental implant applications
Source abstract
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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Research context
OpenAlex topics: Orthopaedic implants and arthroplasty · Dental materials and restorations · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Biomedical Engineering Department, Faculty of Engineering, Minia University 1 , Minia 61519, Egypt
Department of Mechanical and Energy Systems Engineering, Faculty of Engineering and Informatics, University of Bradford 2 , Bradford BD7 1DP, United Kingdom
Mechanical Engineering Department, College of Engineering, King Saud University 3 , Riyadh 11421, Saudi Arabia
Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University 4 , Riyadh 11421, Saudi Arabia
Funding
King Saud University
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