Smart slippage lamellar-repulsive lubrication supports the negatively charged cartilage surface. The natural surface of articular cartilage is covered by the surface amorphous layer (SAL). Electrostatic repulsion between the two cartilage surfaces causes friction, which is mostly related to charge density. We observed a steady and low friction coefficient at pH 7.4 (1). The frictional conductivity of normal articular cartilage was compared to the surface of sick cartilage in this study. The wettability and friction coefficient of worn surfaces were investigated after sliding tests of a (cartilage/ cartilage). The development of phospholipid bilayers, a lubricant, was found to alter friction performance.
Author(s) Details
Michal Sojka
Kujawy University, Mechanical Department, Czarnieckiego 5/7, 86-300
Grudziadz, Poland and CORSAR Engineering Industry, Glogowa 2, 86-031 Osielsko,
Poland.
Zenon Pawlak
Tribochemistry Consulting, Salt Lake City, UT 84117, USA and University of
Economy, Biotribology Laboratory, Garbary 2, 85-229 Bydgoszcz, Poland.
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