Mechanical properties and osteogenesis of CFR-PEEK composite with interface strengthening by graphene oxide for implant application.
In: Journal of the Mechanical Behavior of Biomedical Materials, Jg. 148 (2023-12-01), S. N.PAG
academicJournal
Zugriff:
In this work, 1 wt% of graphite oxide (GO) was used to strengthen the interface of carbon fibers (CF) reinforced polyetheretherketone (CFR-PEEK) composites, so as to obtain sufficiently high mechanical properties and bioactive surfaces which are two fundamental requirements for orthopedic/dental implants. Concretely, aminated GO was grafted onto oxidized CF in aqueous solution in a mild and non-toxic manner, subsequently, the CF grafted by GO was used for injection molding to prepare CFR-PEEK implant. The dispersibility of CF in the composites were remarkably boosted. Mechanical tests indicated that the flexural strength, compressive strength and hardness of CFR-PEEK were increased by 51%, 46%, and 30%, respectively. Furthermore, the flexural modulus increased to 11.67 ± 0.20 GPa and the compression modulus increased to 6.12 ± 0.11 GPa, which both meet the elastic modulus of human bone (6–30 GPa). The wear resistance was slightly improved. In the in vitro cell evaluation, CFR-PEEK with interface strengthening by GO showed no cytotoxicity and exhibited significantly enhanced adhesion and proliferation of Bone marrow mesenchymal stem cells (BMSCs) on the surface. More importantly, osteogenesis-related protein expression in vitro and osteogenetic evaluation in vivo all disclosed greatly accelerated osteo-differentiation of BMSCs on the composites due to the additive effect of GO at the interface. Based on this scheme, the CFR-PEEK composites with the dual functions of mechanical enhancement and osteointegration promotion holds great potential as implants in orthopedic/dental applications. • 1 wt% of GO was grafted onto CF to enhance the interfacial properties of CFR-PEEK. • The method of grafting GO in aqueous solution was non-toxic, efficient and simple. • Flexural and compressive strength were increased by 51% and 46%, respectively. • The wear volume was decreased to less than 1 * 10 −4 mm 3 . • GO at the interface significantly promoted osseointegration in vitro and in vivo. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the Mechanical Behavior of Biomedical Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Mechanical properties and osteogenesis of CFR-PEEK composite with interface strengthening by graphene oxide for implant application.
|
---|---|
Autor/in / Beteiligte Person: | Qin, Wen ; Xing, Tong ; Tang, Bin ; Chen, Weiyi |
Zeitschrift: | Journal of the Mechanical Behavior of Biomedical Materials, Jg. 148 (2023-12-01), S. N.PAG |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 1751-6161 (print) |
DOI: | 10.1016/j.jmbbm.2023.106222 |
Schlagwort: |
|
Sonstiges: |
|