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Turning the solubility and lubricity of ionic liquids by absorbing CO2
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements. State Key Laboratory of Materials-oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University.ORCID iD: 0000-0001-6137-5349
Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron.
Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron.
Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing .
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2018 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 121, p. 223-230Article in journal (Refereed) Published
Abstract [en]

Ionic liquids (ILs) attract high interest as lubricants or lubricant additives due to their special physicochemical characteristics. CO2 is a widely distributed gas. In many situations, its influence on lubricants cannot be avoided. In this work, three ILs are synthesized from choline and amino acids of glycine, l-proline and lysine, respectively. The influence of CO2 absorption on their solubility and lubricity is investigated. In general, it is interesting to find that the solubility is decreased and their lubricity is obviously improved after absorbing CO2, which is strongly related to their functional group (amino group) interactions with CO2. The formation of carbamate groups greatly increases the viscosity resulting in less solid contacts, and strengthens the interfacial adhesion between ILs and solids.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 121, p. 223-230
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-67536DOI: 10.1016/j.triboint.2018.01.039ISI: 000428605700023Scopus ID: 2-s2.0-85041476612OAI: oai:DiVA.org:ltu-67536DiVA, id: diva2:1180720
Note

Validerad;2018;Nivå 2;2018-02-06 (andbra)

Available from: 2018-02-06 Created: 2018-02-06 Last updated: 2018-04-19Bibliographically approved

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