Karadag, AhmetAkbas, HuseyinKarakas, DuranTekin, Kadir CihanKorkmazer, Erdem2019-07-272019-07-282019-07-272019-07-2820191300-0527https://dx.doi.org/10.3906/kim-1809-56https://hdl.handle.net/20.500.12418/6000Protic ionic liquids (PILs) were synthesized through a stoichiometric neutralization reaction between 2,2'-(ethylenedioxy)-bis(ethylamine) {Edbea} and various acids (formic, acetic, boric, decanoic, and gentisic acid). The PILs were characterized by elemental analyses, FTIR, H-1 and C-13 NMR spectroscopy, and thermogravimetric analysis. All the PILs except PIL3 were liquid at room temperature. The viscosity of the PILs (PIL1, 2, 4, 5) was measured using a cone-and-plate viscometer at ambient temperature. Quantum chemical calculations were used to explain the cation/anion ratio in the PILs. Reaction energies in the gas phase calculated at M062X/6-311+G(d,p) level were used to determine the cation/anion ratio. A sliding wear test was conducted at room temperature using an AA7075 disc specimen against a stationary 100Cr6 steel ball. The wear protection of PILs and 15W40 engine oil was determined by considering the volume loss of AA7075.en10.3906/kim-1809-56info:eu-repo/semantics/closedAccessProtic ionic liquidtribologyspectroscopyquantum chemical calculationArticle433+7662-s2.0-85068828318Q3335844WOS:000473228400004Q4