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Influence of structural variations on imidazolium based ionic liquids

: Dold, C.; Amann, T.; Kailer, A.

Bartz, W.J. ; Technische Akademie Esslingen -TAE-:
Industrial and automotive lubrication. Book of synopses 2012 : 18th International Colloquium Tribology, 10 - 12 January 2012, Stuttgart/Ostfildern
Ostfildern: TAE, 2012
ISBN: 3-924813-97-3
International Colloquium Tribology <18, 2012, Ostfildern>
Deutsche Forschungsgemeinschaft DFG
SPP 1191; KA2745/3-1
Triborheology and molecular structure of novel ionic liquids influenced by flow and electric fields (IL-Triborheology)
Fraunhofer IWM ()
structural variations; imidazolium based ionic liquids; friction-reduction

In this work a fundamental study of ionic liquids (ILs) is shown. The main goal was to establish relationships between rheological and tribological properties of ILs and to understand how these properties are linked to the molecular structure of ILs. Of particular interest were the effects occurring to a frictional system due to variations of the anions and the alkyl chain length of the imidazolium cations. Tribological experiments were performed using a reciprocating ball-ondisc test machine. To understand the effects resulting from a variation of the structural characteristics of the used Ils on the rheological properties, studies were performed using a rheometer. The obtained results are very promising in terms of improving friction and wear behaviour of ionic liquids compared to reference lubricants.