Tribological characteristics of polyvinylpyrrolidone (PVP) as a lubrication additive for artificial knee joint

Yang Guo, Zhixiu Hao*, Chao Wan

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The effect of polyvinylpyrrolidone (PVP) on tribological properties of joint prostheses is still unclear despite its good lubricity and biocompatibility. PVP solutions with five concentrations were prepared with two different solvents. The viscosity, surface tension, and static contact angle of the solutions were measured as well as the friction coefficient and wear volume of artificial joint pairs. With PVP concentration increasing, the friction coefficient firstly decreased significantly but subsequently tapered off after a high level. The inclusion of PVP also improved the wear resistance of the pair. It implies that PVP could be a promising lubrication additive for artificial joints.

Original languageEnglish
Pages (from-to)214-219
Number of pages6
JournalTribology International
Volume93
Issue numberPart A
DOIs
Publication statusPublished - Jan 2016
Externally publishedYes

Keywords

  • Polyvinylpyrrolidone
  • Lubrication
  • Artificial kneejoint
  • Tribologicalproperties

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