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Evaluation of lubrication properties of hydrogel artificial cartilage materials for joint prosthesis
- Source :
- Biosurface and Biotribology, Vol 2, Iss 1, Pp 40-47 (2016)
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- Poly (vinyl alcohol) (PVA) hydrogel with high water content is the candidate material for artificial cartilage. PVA hydrogels prepared by freeze-thawing (FT) method (PVA-FT gel), cast-drying (CD) method (PVA-CD gel) and hybrid method of FT and CD (PVA-hybrid gel) were developed and their friction and wear behaviors were evaluated. Sliding pairs of a cobalt-chromium-molybdenum alloy or alumina ceramic ball and a PVA hydrogel plate were tested in reciprocating friction test. Ultra-pure water and simulated synovial fluid were used as lubricants for friction test. PVA-FT gel showed high friction and severe wear in ultra-pure water. Friction coefficient of PVA-CD gel in ultra-pure water was quite low such as about 0.005, but scratches were observed on the surface of PVA-CD gel. PVA-hybrid gel lubricated in ultra-pure water showed low friction such as 0.004, and intact surface structure of PVA-hybrid gel remained after friction test. Simulated synovial fluid contributed to the improvement of lubrication property of all PVA hydrogels and PVA-hybrid gel showed the lowest friction coefficient such as 0.003 and minimum wear. These results indicated that PVA-hybrid gel has a great potential as the material for artificial joint.
Details
- Language :
- English
- ISSN :
- 24054518
- Volume :
- 2
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Biosurface and Biotribology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.f6f0ea0ec2cc4ae3988d89d1d7e24eee
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.bsbt.2016.02.005