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Lubrication behaviors of PVA-casted LSPEEK hydrogels in artificial cartilage repair

机译:PVA铸造Lspek水凝胶在人工软骨修复中的润滑行为

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摘要

Poly(ether-ether-ketone) (PEEK) is a known bio-implant material due to its excellent mechanical properties. However, the challenging issue of high friction coefficient limits the PEEK applications. In this article, double-layered hydrogel material was obtained by laser processing, surface sulfonation, and poly(vinyl alcohol) (PVA) casting. Characterizations of FT-IR, XRD, SEM, and 3D-morphology demonstrate that PVA-LSPEEK hydrogel was achieved successfully. PVA-LSPEEK exhibits an extremely smooth surface with a roughness of 0.079 mu m. And this hydrogel presents an excellent mechanical adhesion to PEEK substrate, forming a soft-hard structure. Tribological properties of PVA-LSPEEK are improved drastically when compared to the PEEK substrate. This innovative hydrogel material provides a potential application in articular cartilage defect repair. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47944.
机译:聚(醚 - 醚 - 酮)(PEEK)是一种已知的生物植入材料,由于其优异的机械性能。 然而,挑战性的高摩擦系数问题限制了PEEK应用。 在本文中,通过激光加工,表面磺化和聚(乙烯醇)(PVA)浇铸来获得双层水凝胶材料。 FT-IR,XRD,SEM和3D形态的特征表明PVA-Lspeek水凝胶成功实现。 PVA-Lspeek表现出极光滑的表面,粗糙度为0.079亩。 并且该水凝胶具有优异的机械粘附,形成柔软的结构。 与PEEK底物相比,PVA-Lspeek的摩擦学特性急剧改善。 这种创新的水凝胶材料在关节软骨缺陷修复中提供了潜在的应用。 (c)2019 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,47944。

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