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Friction 2018, 6(2): 208-218 https://doi.org/10.1007/s40544-017-0170-x
Research Article | Open Access | Issue | Published: 04 November 2017

Tribological evaluation of environmentally friendly ionic liquids derived from renewable biomaterials

Show Author's Information Cheng JIANG1,2,  Weimin LI1,2,  Jingyan NIAN1,  Wenjing LOU1,2( ),  Xiaobo WANG1,2
 State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
 Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Keywords:
lubricant, ionic liquids, choline, amino acids, tribological behavior, environmentally friendly
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JIANG C, LI W, NIAN J, et al. Tribological evaluation of environmentally friendly ionic liquids derived from renewable biomaterials. Friction, 2018, 6(2): 208-218. https://doi.org/10.1007/s40544-017-0170-x
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Abstract Full text About this article

Unlike most of the conventional ionic liquids (ILs) derived from non-renewable resources, five environmentally friendly ILs ([Ch][AA] ILs) derived from amino acids (AAs) and choline (Ch) were synthesized using biomaterials by a simple, green route: acid–base reaction of Ch and AAs. The thermal and corrosion properties, as well as viscosity, of the prepared ILs were examined. The results revealed that the anion structure of ILs plays a dominant role in their thermal and viscosity behavior. These ILs exhibited less corrosion toward copper, related to their halogen-, sulfur-, and phosphorus-free characteristics. The tribological behavior of the synthesized ILs was examined using a Schwingungs Reibung und Verschleiss tester, and the results indicated that these ILs exhibit good friction-reducing and anti-wear properties as lubricants for steel/steel contact. Results from energy-dispersive spectroscopy and X-ray photoelectron spectroscopy indicated that the good tribological properties of [Ch][AA] ILs are related to the formation of a physically adsorbed film on the metal surface during friction.


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Tribological evaluation of environmentally friendly ionic liquids derived from renewable biomaterials

Show Author's information Cheng JIANG1,2, Weimin LI1,2, Jingyan NIAN1, Wenjing LOU1,2( ), Xiaobo WANG1,2
 State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
 Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China

Abstract

Unlike most of the conventional ionic liquids (ILs) derived from non-renewable resources, five environmentally friendly ILs ([Ch][AA] ILs) derived from amino acids (AAs) and choline (Ch) were synthesized using biomaterials by a simple, green route: acid–base reaction of Ch and AAs. The thermal and corrosion properties, as well as viscosity, of the prepared ILs were examined. The results revealed that the anion structure of ILs plays a dominant role in their thermal and viscosity behavior. These ILs exhibited less corrosion toward copper, related to their halogen-, sulfur-, and phosphorus-free characteristics. The tribological behavior of the synthesized ILs was examined using a Schwingungs Reibung und Verschleiss tester, and the results indicated that these ILs exhibit good friction-reducing and anti-wear properties as lubricants for steel/steel contact. Results from energy-dispersive spectroscopy and X-ray photoelectron spectroscopy indicated that the good tribological properties of [Ch][AA] ILs are related to the formation of a physically adsorbed film on the metal surface during friction.

Keywords: lubricant, ionic liquids, choline, amino acids, tribological behavior, environmentally friendly

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Publication history
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Publication history

Received: 26 December 2016
Revised: 01 May 2017
Accepted: 01 June 2017
Published: 04 November 2017
Issue date: June 2018

Copyright

© The author(s) 2017

Acknowledgements

The authors are grateful to National Natural Science Foundation of China (Grant Nos. 51605471 and 51505460) and National 973 program (No. 2013CB632301) for financial support.

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This article is published with open access at Springerlink.com

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