The influence of surface active agents on physical properties of glycerol and its friction in lubricated contacts
This study shows how surface-active agents, added into lubricant, effect on lubricant properties, such as viscosity and surface tension and consequently on friction performance of contacts lubricated with this kind of lubricant.
Glycerol, as a potential novel green lubricant, has been selected. Results show, that adding of surface active agents in concentrations up to 2 wt. %, much more effect on the surface tension (changes over 50 %) than on the viscosity (changes lower than 1 %). Changes surface tension of glycerol further induce up to 11 % lower friction in lubricated contact.
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