Degradation of additively manufactured biomedical PEEK and PLA: experimental characterization at elevated temperatures
Materials for additive manufacturing (AM), such as PLA and PEEK, are often used in biomedical applications, which involve interaction with liquid media. Consequently, the degradation process is a part of the service life of such polymers that can alter their mechanical response due to gradual change...
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| Veröffentlicht in: | International journal of advanced manufacturing technology 2024-11, Vol.135 (5-6), p.2161-2172 |
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| creator | Vindokurov, Ilia Tashkinov, Mikhail Silberschmidt, Vadim V. |
| description | Materials for additive manufacturing (AM), such as PLA and PEEK, are often used in biomedical applications, which involve interaction with liquid media. Consequently, the degradation process is a part of the service life of such polymers that can alter their mechanical response due to gradual changes in materials’ properties. Studying the behaviour of polymers in such environments is thus important for the prediction of the mechanical performance of biomedical devices. This paper examines the process of accelerated degradation of AM PLA and PEEK samples in saline solution and distilled water at elevated temperatures. An analysis of changes in mechanical properties, such as tensile strength and density, of PLA and PEEK with the immersion time was performed. The influence of heat treatment on the degradation process was investigated. It was found that the degradation rate of PLA in distilled water was higher than in NaCl. The trends in density changes measured with hydrostatic weighing correspond to those in the strength properties of the studied samples. |
| doi_str_mv | 10.1007/s00170-024-14662-w |
| format | Article |
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| subjects | Additive manufacturing Advanced manufacturing technologies Biodegradation Biomedical materials CAE) and Design Computer-Aided Engineering (CAD Degradation Density Distilled water Engineering Heat treatment High temperature Industrial and Production Engineering Manufacturers Mechanical analysis Mechanical Engineering Mechanical properties Media Management Medical research Original Article Physiology Polymers Saline solutions Service life Temperature Tensile strength |
| title | Degradation of additively manufactured biomedical PEEK and PLA: experimental characterization at elevated temperatures |
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