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Lubricants, Volume 5, Issue 3 (September 2017) – 18 articles
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Cover Story (view full-size image) Tribochemical reactivity of ionic liquids is the key factor controlling their good antiwear [...] Read more. Tribochemical reactivity of ionic liquids is the key factor controlling their good antiwear properties. A new experimental technique of Mechanically Stimulated Gas Emission Mass-Spectrometry was used to analyze the reaction paths of tribochemical decomposition of poly (ethylene glycol) functionalized dicationic imidazolium ionic liquid. The composition and the emission time-series of the volatile products suggested that detachment of alkyl side chains together with depolymerization of the bridging chain were the main decomposition reactions. Higher stability of the imidazolium groups was associated with three-dimensional conformation of dication. We also provide an overview of the primary and secondary reactions of the anion tribochemical degradation. View the paper here.