Fiedler, MartinSánchez Martínez, RubénValencia Barragán, ConcepciónLeopold, Claudia S.Kuhn, ErikFranco Gómez, José María2015-09-212015-09-212015Fiedler, M., Sánchez Martínez, R., Valencia Barragán, C., Leopold, C.S., Kuhn, E., Franco Gómez, J.M.: "Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases". Lubricants. Vol. 3, págs. 611-627 (2015). DOI 10.3390/lubricants30306112075-444http://hdl.handle.net/10272/11128The scope of this study is to elucidate the physical mechanisms influencing the transient flow behavior of lubricating greases based on biogenic oleochemicals from a polarity point of view. This includes the mutually interacting influence of base oil polarity and thickening agents on the rheologically-measured mechanical structural degradation in transient shear flow. Due to the high temperature dependence of Keesom forces in the background of polar-active bond mechanisms, the analysis of the transient flow response as a function of temperature allows to attribute the observed influences to differences in base oil polarity. In general, clay-thickened greases show a greater tendency to be rheologically influenced by base oil polarities than soap-thickened lubricating greases.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Biodegradable lubricating greasesAFMOil polarityRheologyTransient flowjournal article10.3390/lubricants3030611open access