Journal article
Friction and wear behavior of poly(vinyl alcohol)/poly(vinyl pyrrolidone) hydrogels for articular cartilage replacement
Journal of biomedical materials research. Part A, v 83(2), pp 471-479
Nov 2007
PMID: 17492689
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Many hydrogels have been proposed as articular cartilage replacements as an alternative to partial or total joint replacements. In the current study, poly(vinyl alcohol)/poly(vinyl pyrrolidone) (PVA/PVP) hydrogels were investigated as potential cartilage replacements by investigating their in vitro wear and friction characteristics in a pin-on-disk setup. A three-factor variable-level experiment was designed to study the wear and friction characteristics of PVA/PVP hydrogels. The three different factors studied were (a) polymer content of PVA/PVP hydrogels, (b) load, and (c) effect of lubricant. Twelve tests were conducted, with each lasting 100,000 cycles against Co-Cr pins. The average coefficient of friction for synovial fluid lubrication was a low 0.035 compared with 0.1 for bovine serum lubrication. Frictional behavior of PVA/PVP hydrogels did not follow Amonton's law of friction. Wear of the hydrogels was quantified by measuring their dry masses before and after the tests. Higher polymer content significantly reduced the wear of hydrogel samples with 15% PVA/PVP samples, showing an average dry polymer loss of 4.74% compared with 6.05% for 10% PVA/PVP samples. A trend change was observed in both the friction and wear characteristics of PVA/PVP hydrogels at 125 N load, suggesting a transition in the lubricating mechanism at the pin-hydrogel interface at the critical 125 N load.
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Details
- Title
- Friction and wear behavior of poly(vinyl alcohol)/poly(vinyl pyrrolidone) hydrogels for articular cartilage replacement
- Creators
- Jayanth K Katta - School of Biomedical Engineering, Drexel University, 32nd and Chestnut Streets, Philadelphia, Pennsylvania 19104, USAMichele MarcolongoAnthony LowmanKevin A Mansmann
- Publication Details
- Journal of biomedical materials research. Part A, v 83(2), pp 471-479
- Publisher
- Wiley; United States
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000249989300025
- Scopus ID
- 2-s2.0-35048839875
- Other Identifier
- 991014877679504721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Materials Science, Biomaterials