A Presentation of Ionic Liquids as Lubricants: Some Critical Comments

Ionic liquids (ILs) are liquid materials at room temperature with an ionic intrinsic nature. The electrostatic interactions therefore play a pivotal role in dictating their inner structure, which is then expected to be far from the traditional pattern of classical simple liquids. Therefore, the stre...

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Main Authors: Pietro Calandra, Elisabeta I. Szerb, Domenico Lombardo, Vincenzo Algieri, Antonio De Nino, Loredana Maiuolo
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/12/5677
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author Pietro Calandra
Elisabeta I. Szerb
Domenico Lombardo
Vincenzo Algieri
Antonio De Nino
Loredana Maiuolo
author_facet Pietro Calandra
Elisabeta I. Szerb
Domenico Lombardo
Vincenzo Algieri
Antonio De Nino
Loredana Maiuolo
author_sort Pietro Calandra
collection DOAJ
description Ionic liquids (ILs) are liquid materials at room temperature with an ionic intrinsic nature. The electrostatic interactions therefore play a pivotal role in dictating their inner structure, which is then expected to be far from the traditional pattern of classical simple liquids. Therefore, the strength of such interactions and their long-range effects are responsible for the ionic liquid high viscosity, a fact that itself suggests their possible use as lubricants. More interestingly, the possibility to establish a wide scenario of possible interactions with solid surfaces constitutes a specific added value in this use. In this framework, the ionic liquid complex molecular structure and the huge variety of possible interactions cause a complex aggregation pattern which can depend on the presence of the solid surface itself. Although there is plenty of literature focusing on the lubricant properties of ionic liquids and their applications, the aim of this contribution is, instead, to furnish to the reader a panoramic view of this exciting problematic, commenting on interesting and speculative aspects which are sometimes neglected in standard works and trying to furnish an enriched vision of the topic. The present work constitutes an easy-to-read critical point of view which tries to interact with the imagination of readers, hopefully leading to the discovery of novel aspects and interconnections and ultimately stimulating new ideas and research.
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spelling doaj.art-68cc8f258a6c4d77804df5da81d906df2023-11-22T00:48:40ZengMDPI AGApplied Sciences2076-34172021-06-011112567710.3390/app11125677A Presentation of Ionic Liquids as Lubricants: Some Critical CommentsPietro Calandra0Elisabeta I. Szerb1Domenico Lombardo2Vincenzo Algieri3Antonio De Nino4Loredana Maiuolo5CNR-ISMN, Via Salaria km 29.300, 00015 Monterotondo Stazione, RM, Italy“Coriolan Drăgulescu” Institute of Chemistry, Romanian Academy, 24 Mihai Viteazu Bvd., 300223 Timişoara, RomaniaCNR-Istituto per i Processi Chimico-Fisici, 98158 Messina, ME, ItalyDipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/C, 87036 Arcavacata di Rende, CS, ItalyDipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/C, 87036 Arcavacata di Rende, CS, ItalyDipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/C, 87036 Arcavacata di Rende, CS, ItalyIonic liquids (ILs) are liquid materials at room temperature with an ionic intrinsic nature. The electrostatic interactions therefore play a pivotal role in dictating their inner structure, which is then expected to be far from the traditional pattern of classical simple liquids. Therefore, the strength of such interactions and their long-range effects are responsible for the ionic liquid high viscosity, a fact that itself suggests their possible use as lubricants. More interestingly, the possibility to establish a wide scenario of possible interactions with solid surfaces constitutes a specific added value in this use. In this framework, the ionic liquid complex molecular structure and the huge variety of possible interactions cause a complex aggregation pattern which can depend on the presence of the solid surface itself. Although there is plenty of literature focusing on the lubricant properties of ionic liquids and their applications, the aim of this contribution is, instead, to furnish to the reader a panoramic view of this exciting problematic, commenting on interesting and speculative aspects which are sometimes neglected in standard works and trying to furnish an enriched vision of the topic. The present work constitutes an easy-to-read critical point of view which tries to interact with the imagination of readers, hopefully leading to the discovery of novel aspects and interconnections and ultimately stimulating new ideas and research.https://www.mdpi.com/2076-3417/11/12/5677lubricantsionic liquidsself-assembly
spellingShingle Pietro Calandra
Elisabeta I. Szerb
Domenico Lombardo
Vincenzo Algieri
Antonio De Nino
Loredana Maiuolo
A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
Applied Sciences
lubricants
ionic liquids
self-assembly
title A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
title_full A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
title_fullStr A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
title_full_unstemmed A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
title_short A Presentation of Ionic Liquids as Lubricants: Some Critical Comments
title_sort presentation of ionic liquids as lubricants some critical comments
topic lubricants
ionic liquids
self-assembly
url https://www.mdpi.com/2076-3417/11/12/5677
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