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A.M. Bogus:
"AFM nanotribology study of the frictional properties of ethanolamine oligomers";
Vortrag: Leeds-Lyon Symp. Summer School, INSA, Lyon/F; 10.09.2007.

Ehanolamines were found as multidentate ligands through amino, hydroxyl, and deprotonated hydroxyl groups. They are water soluble and are utilised as lubricating additives in cooling water.
Experiments from the macro- to the nanorange show that different oligomers of ethanolamine have different lubrication properties on tribologically relevant surfaces, e.g. copper. Understanding of the lubrication properties of the first chemisorbed layer of these additives on workpieces yields important information regarding lubrication optimisation in aqueous and non-aqueous solutions (concerning type of additive, amount, type of oligomer).
Chemisorbed layers of mono-, di- and triethanolamine oligomers were investigated with atomic force microscopy methods regarding differences in their lubrication properties on the nanoscale.
The ethanolamines were dissolved in double distilled water. Copper sputtered silicon wafers served as substrates. We investigate if the friction between the sample and the AFM tip in double distilled water environment changes by introducing ethanolamine oligomer to the solvent.
First, the friction force values as introduced by Bhushan [2] of the virgin surfaces were determined. Then, the additives were induced into the fluid cell. Concentrations of the additives were below the saturation concentration, to prevent the growth of additive crystals on the copper surface.
The friction force method yielded distinct differences in the friction force values for mono-, di- and triethanolamine and the virgin copper surface.