Journal Home > Volume 12 , Issue 4

Designing novel lubricants with easily customized structures, devisable compositions, and simple and economic synthesis over traditional lubricants is critical to fulfilling complex applications, prolonging machine lifetime, and saving energy. Deep eutectic solvents (DESs), which show tunable composition, adjustable structure, easy fabrication, and environmental friendliness, are promising candidates for variable and complicated lubricants applications. To promote the use of DESs as lubricants, a series of PEG200-based DESs with active heteroatoms were fabricated to tailor the tribological performance via tribo-chemistry. Thereinto, PEG200/boric acid (BA) DES shows optimal lubrication performance by forming tribo-chemical reaction film composited of B2O3, iron oxides, and FeOOH, and PEG200/thiourea (TU) DES displays abrasive wear-reducing property by producing FeS tribo-chemical film. Given the excellent abrasive wear-resistance of PEG200/TU DES and friction reduction of PEG200/BA DES, ternary PEG200/BA/TU DESs, composited of PEG200/TU DES and PEG200/BA DES, are first exploited. The ternary DESs possess superior wettability and thermal stability, which render them potential lubricants. Tribological tests of the ternary DESs demonstrate that synergistic lubrication is achieved by forming a transfer film consisting of FexBy, BN, B2O3, and FeS. Wherein FexBy, BN, and B2O3 increase load bearing of the film, and FeS mitigates severe abrasive wear. The proposed design philosophy of novel DESs as lubricants opens up a unique realm that is unattainable by traditional DESs lubrication mechanisms and provides a platform to design next-generation DESs lubrication systems.


menu
Abstract
Full text
Outline
Electronic supplementary material
About this article

Construction of ternary PEG200-based DESs lubrication systems via tailoring tribo-chemistry

Show Author's information Yuting LI1Songyu LAN1Yazhou LIU1Cheng CAO1Zicheng TANG1Deyin DENG1Fuyuan LIU1Hao LI1( )Xiaoqiang FAN1Minhao ZHU1,2
Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Abstract

Designing novel lubricants with easily customized structures, devisable compositions, and simple and economic synthesis over traditional lubricants is critical to fulfilling complex applications, prolonging machine lifetime, and saving energy. Deep eutectic solvents (DESs), which show tunable composition, adjustable structure, easy fabrication, and environmental friendliness, are promising candidates for variable and complicated lubricants applications. To promote the use of DESs as lubricants, a series of PEG200-based DESs with active heteroatoms were fabricated to tailor the tribological performance via tribo-chemistry. Thereinto, PEG200/boric acid (BA) DES shows optimal lubrication performance by forming tribo-chemical reaction film composited of B2O3, iron oxides, and FeOOH, and PEG200/thiourea (TU) DES displays abrasive wear-reducing property by producing FeS tribo-chemical film. Given the excellent abrasive wear-resistance of PEG200/TU DES and friction reduction of PEG200/BA DES, ternary PEG200/BA/TU DESs, composited of PEG200/TU DES and PEG200/BA DES, are first exploited. The ternary DESs possess superior wettability and thermal stability, which render them potential lubricants. Tribological tests of the ternary DESs demonstrate that synergistic lubrication is achieved by forming a transfer film consisting of FexBy, BN, B2O3, and FeS. Wherein FexBy, BN, and B2O3 increase load bearing of the film, and FeS mitigates severe abrasive wear. The proposed design philosophy of novel DESs as lubricants opens up a unique realm that is unattainable by traditional DESs lubrication mechanisms and provides a platform to design next-generation DESs lubrication systems.

Keywords: synergistic lubrication, deep eutectic solvents (DESs), PEG200/boric acid DES, PEG200/thiourea DES, ternary DESs, tribo-chemistry

References(42)

[1]
Smith EL, Abbott AP, Ryder KS. Deep eutectic solvents (DESs) and their applications. Chem Rev 114(21): 11060–11082 (2014)
[2]
Marcus Y. Deep Eutectic Solvents. Springer Nature Switzerland AG, 2019
DOI
[3]
Francisco M, van den Bruinhorst A, Kroon MC. Low-transition-temperature mixtures (LTTMs): A new generation of designer solvents. Angew Chem Int Ed Engl 52(11): 3074–3085 (2013)
[4]
Dziubinska-Kühn K, Pupier M, Matysik J, Viger-Gravel J, Karg B, Kowalska M. Time-dependent hydrogen bond network formation in glycerol-based deep eutectic solvents. ChemPhysChem 23(10): e202100806 (2022)
[5]
Quintana AA, Sztapka AM, Santos Ebinuma VC, Agatemor C. Enabling sustainable chemistry with ionic liquids and deep eutectic solvents: A fad or the future? Angew Chem Int Ed Engl 61(37): e202205609 (2022)
[6]
Zhang Q, De Oliveira Vigier K, Royer S, Jérôme F. Deep eutectic solvents: Syntheses, properties and applications. Chem Soc Rev 41(21): 7108–7146 (2012)
[7]
Lawes S D A, Hainsworth S V, Blake P, Ryder K S, Abbott A P. Lubrication of steel/steel contacts by choline chloride ionic liquids. Tribol Lett 37(2): 103–110 (2010)
[8]
Abbott A P, Ahmed E I, Harris R C, Ryder K S. Evaluating water miscible deep eutectic solvents (DESs) and ionic liquids as potential lubricants. Green Chem 16(9): 4156–4161 (2014)
[9]
Khan A, Singh R, Gupta P, Gupta K, Khatri O P. Aminoguanidine-based deep eutectic solvents as environmentally-friendly and high-performance lubricant additives. J Mol Liq 339: 116829 (2021)
[10]
Garcia I, Guerra S, de Damborenea J, Conde A. Reduction of the coefficient of friction of steel-steel tribological contacts by novel graphene-deep eutectic solvents (DESs) lubricants. Lubricants 7(4): 37 (2019)
[11]
Li Y T, Li Y, Li H, Fan X Q, Yan H, Cai M, Xu X J, Zhu M H. Insights into the tribological behavior of choline chloride—Urea and choline chloride—Thiourea deep eutectic solvents. Friction 11(1): 76–92 (2023)
[12]
Cai M R, Yu Q L, Liu W M, Zhou F. Ionic liquid lubricants: When chemistry meets tribology. Chem Soc Rev 49(21): 7753–7818 (2020)
[13]
Mou Z H, Wang B G, Lu H S, Quan H P, Huang Z Y. Branched polyelectrolyte grafted carbon dots as the high-performance friction-reducing and antiwear additives of polyethylene glycol. Carbon 149: 594–603 (2019)
[14]
Li C P, Li D, Zou S S, Li Z, Yin J M, Wang A L, Cui Y N, Yao Z L, Zhao Q. Extraction desulfurization process of fuels with ammonium-based deep eutectic solvents. Green Chem 15(10): 2793–2799 (2013)
[15]
Zhao X H, Lan X E, Yu D K, Fu H, Liu Z M, Mu T C. Deep eutectic-solvothermal synthesis of nanostructured Fe3S4 for electrochemical N2 fixation under ambient conditions. Chem Commun 54(92): 13010–13013 (2018)
[16]
Chen W J, Bai X Y, Xue Z M, Mou H Y, Chen J G, Liu Z T, Mu T C. The formation and physicochemical properties of PEGylated deep eutectic solvents. New J Chem 43(22): 8804–8810 (2019)
[17]
Jiang J Y, Yan C Y, Zhao X H, Luo H X, Xue Z M, Mu T C. A PEGylated deep eutectic solvent for controllable solvothermal synthesis of porous NiCo2S4 for efficient oxygen evolution reaction. Green Chem 19(13): 3023–3031 (2017)
[18]
Madhurambal G, Mariappan M, Ravindran B, Mojumdar S C. Thermal and FTIR spectral studies in various proportions of urea thiourea mixed crystal. J Therm Anal Calorim 104(3): 885–891 (2011)
[19]
Karimi M, Dadfarnia S, Haji Shabani A M. Hollow fibre-supported graphene oxide nanosheets modified with a deep eutectic solvent to be used for the solid-phase microextraction of silver ions. Int J Environ Anal Chem 98(2): 124–137 (2018)
[20]
Yue D Y, Jia Y Z, Yao Y, Sun J H, Jing Y. Structure and electrochemical behavior of ionic liquid analogue based on choline chloride and urea. Electrochim Acta 65: 30–36 (2012)
[21]
Delgado-Mellado N, Larriba M, Navarro P, Rigual V, Ayuso M, García J, Rodríguez F. Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis. J Mol Liq 260: 37–43 (2018)
[22]
Freitas D S, Rocha D, Castro T G, Noro J, Castro V I B, Teixeira M A, Reis R L, Cavaco-Paulo A, Silva C. Green extraction of cork bioactive compounds using natural deep eutectic mixtures. ACS Sustainable Chem Eng 10(24): 7974–7989 (2022)
[23]
Han N, Zhang X X. Effect of boric acid on thermal stability of poly (acrylonitrile-methyl acrylate). E-Polymers 9(1): 014 (2009)
[24]
Gönen M, Nyankson E, Gupta R B. Boric acid production from colemanite together with ex situ CO2 sequestration. Ind Eng Chem Res 55(17): 5116–5124 (2016)
[25]
Dokken K, Davis L, Erickson L, Castro S D. Fourier-transform infrared spectroscopy as a tool to monitor changes in plant structure in response to soil contaminants. In 2002 Proceedings—Waste Research Technology, 2002.
[26]
Mohan V, Naske C D, Britten C N, Karimi L, Walters K B. Hydroxide-catalyzed cleavage of selective ester bonds in phosphatidylcholine: An FTIR study. Vib Spectrosc 109: 103055 (2020)
[27]
Haraźna K, Walas K, Urbańska P, Witko T, Snoch W, Siemek A, Jachimska B, Krzan M, Napruszewska B D, Witko M, et al. Polyhydroxyalkanoate-derived hydrogen-bond donors for the synthesis of new deep eutectic solvents. Green Chem 21(11): 3116–3126 (2019)
[28]
Alazemi A A, Dysart A D, Phuah X L, Pol V G, Sadeghi F. MoS2 nanolayer coated carbon spheres as an oil additive for enhanced tribological performance. Carbon 110: 367–377 (2016)
[29]
Westerholt A, Weschta M, Bösmann A, Tremmel S, Korth Y, Wolf M, Schlücker E, Wehrum N, Lennert A, Uerdingen M, et al. Halide-free synthesis and tribological performance of oil-miscible ammonium and phosphonium-based ionic liquids. ACS Sustainable Chem Eng 3(5): 797–808 (2015)
[30]
Siriwardane R V, Cook J M. Interactions of SO2 with sodium deposited on silica. J Colloid Interface Sci 108(2): 414–422 (1985)
[31]
Mills P, Sullivan J L. A study of the core level electrons in iron and its three oxides by means of X-ray photoelectron spectroscopy. J Phys D Appl Phys 16(5): 723–732 (1983)
[32]
Yang F W, Huang J M, Zhang G J, Zhang C, Sun D L, Gao N F, Yi S. Tribological properties and action mechanism of a highly hydrolytically stable N-containing heterocyclic borate ester. Ind Lubr Tribol 68: 569–576 (2016)
[33]
Kim Y I, Hatfield W E. Electrical, magnetic and spectroscopic properties of tetrathiafulvalene charge transfer compounds with iron, ruthenium, rhodium and iridium halides. Inorg Chim Acta 188(1): 15–24 (1991)
[34]
Guevremont J M, Bebie J, Elsetinow A R, Strongin D R, Schoonen M A A. Reactivity of the (100) plane of pyrite in oxidizing gaseous and aqueous environments: effects of surface imperfections. Environ Sci Technol 32(23): 3743–3748 (1998)
[35]
Guevremont J M, Elseinow A R, Strongin D R, Bebie J, Schoonen M A A. Structure sensitivity of pyrite oxidation; comparison of the (100) and (111) planes. Am Mineral 83(11–12 Part 1): 1353–1356 (1998)
[36]
Tamura Y, Zhao H, Wang C, Morina A, Neville A. Interaction of DLC and B4C coatings with fully formulated oils in boundary lubrication conditions. Tribol Int 93: 666–680 (2016)
[37]
Yu W Y, Liu M H, Liu H F, Ma X M, Liu Z J. Preparation, characterization, and catalytic properties of polymer-stabilized ruthenium colloids. J Colloid Interface Sci 208(2): 439–444 (1998)
[38]
Powell C J. NIST Data Resources for X-Ray Photoelectron Spectroscopy.
[39]
Wang S, Yue W, Fu Z Q, Wang C B, Li X L, Liu J J. Study on the tribological properties of plasma nitrided bearing steel under lubrication with borate ester additive. Tribol Int 66: 259–264 (2013)
[40]
Thirumal V, Pandurangan A, Jayavel R, Ilangovan R. Synthesis and characterization of boron doped graphene nanosheets for supercapacitor applications. Synth Met 220: 524–532 (2016)
[41]
Spadaro F, Rossi A, Lainé E, Woodward P, Spencer N D. Tuning the surface chemistry of lubricant-derived phosphate thermal films: The effect of boron. Appl Surf Sci 396: 1251–1263 (2017)
[42]
Tan B J, Klabunde K J, Sherwood P M A. X-ray photoelectron spectroscopy studies of solvated metal atom dispersed catalysts. Monometallic iron and bimetallic iron-cobalt particles on alumina. Chem Mater 2(2): 186–191 (1990)
File
40544_0778_ESM.pdf (940.8 KB)
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 09 December 2022
Revised: 20 March 2023
Accepted: 09 May 2023
Published: 06 September 2023
Issue date: April 2024

Copyright

© The author(s) 2023.

Acknowledgements

The authors acknowledge support from the National Natural Science Foundation of China (Nos. 52175190 and 51805455), and the Fundamental Research Funds for the Central Universities (No. 2682021CX117). We thank the technical support from "Ceshigo Research Service Agency for DSC analysis, www.ceshigo.com" and the Analytical and Testing Center of Southwest Jiaotong University for supporting the SEM measurements.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Return