期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
卷 231, 期 9, 页码 1160-1170出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1350650117712881
关键词
Artificial cartilage; hybrid hydrogel; biphasic lubrication; surface lubricity; biotribology
资金
- Japan Society for the Promotion of Science (JSPS) [KAKENHI: 23000011]
- JSPS [KAKENHI: 16H03170]
- Grants-in-Aid for Scientific Research [16H06478, 17H01244, 16K18002, 16H03170] Funding Source: KAKEN
With recent progress of material technologies, the wear resistance of ultra-high molecular weight polyethylene for total joint prostheses has been improved, but under severe conditions friction and wear problems have not yet been completely solved. Therefore, the application of artificial hydrogel cartilage with similar properties to natural articular cartilage is expected to solve the friction and wear problems by improvement of lubrication mechanism with superior tribological functions. In this study, reciprocating tests of four kinds of poly(vinyl alcohol) hydrogels were carried out and the biphasic finite element analysis was conducted. As artificial cartilage specimens, four kinds of poly(vinyl alcohol) hydrogels were prepared using the repeated freeze-thawing (FT) method, the cast-drying (CD) method and the hybrid method with different layered structure as FT on CD or CD on FT. In reciprocating test of ellipsoidal poly(vinyl alcohol) hydrogel specimen against flat glass plate in saline solution, four kinds of hydrogels exhibited very different frictional levels as hybrid (CD on FT)
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