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Abstract
The mixtures of two liquid crystalline compounds (6CHBT and 6CB) with paraffin oil of different concentration were tested as lubricating agents. A great decrease of friction coefficient was observed after doping the paraffin oil with liquid crystalline compounds, specially for higher loads (40, 50 N). The compound with cyano group 6CN gives better improvement of lubricating properties. The FT-IR measurements of tested mixtures shown the tendency of liquid crystalline molecules to accumulate on the metal surface.