Comparison of tribological properties of PEEK for the design of a friction pair of all-polymer implants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00350203" target="_blank" >RIV/68407700:21220/21:00350203 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Comparison of tribological properties of PEEK for the design of a friction pair of all-polymer implants

Original language description

With the development of new polymeric materials, such as PEEK (polyetheretherketone) and its modifications, the possibility to create movable connection of small joint implants from polymer-polymer combinations has opened up. In comparison with metal-polymer or ceramics-polymer friction joints which have been long used, the main advantages of such a connection include a reduced generation of potentially toxic abrasion particles and surprisingly, very good friction and abrasion properties. To select a suitable combination of materials, long-term tribological experiments were designed. PEEK-UHMWPE (ultra-high molecular weight polyethylene) combinations were tested using pin-on-disc method in PBS (phosphate buffered saline) and compared to the commonly used CoCrMo-UHMWPE combination and its improved, DLC (diamond-like carbon) coating including, variant CoCrMo/DLC-UHMWPE. The results showed the PEEK-UHMWPE pair having similar low friction coefficient as Al2O3-UHMWPE but lower wear. The functionality of the PEEK-UHMWPE friction pair was verified on a motion simulator. The tests were performed on a model of the first metatarsophalangeal (MTP) total joint replacement (figure 1), where the metatarsal head was made of PEEK and the phalangeal cup was made of UHMWPE. It was confirmed that the proposed combination can be suitable for the production of small joint implants.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/TN01000071" target="_blank" >TN01000071: National Competence Centre of Mechatronics and Smart Technologies for Mechanical Engineering</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů