Influence of a halogen free ionic liquid on the rheological and tribological characteristics of canola oil
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 13 June 2022
Issue publication date: 4 October 2022
Abstract
Purpose
This paper aims to develop vegetable oil-based environmentally acceptable lubricants with a halogen-free ionic liquid (IL) as a substitute for petroleum-based lubricants.
Design/methodology/approach
The rheological and tribological characteristics of canola oil influenced by 1-ethyl-3-methylimidazolium dicyanamide as an additive along with surfactants have been experimentally investigated. The viscosities of prepared bio-ionic lubricants have been evaluated at a constant shear rate of 100 per second with a temperature ramp from 30°C to 100°C and also by varying shear rate from 1 to 103 per second at constant temperatures of 40°C and 100°C. The solubilization and absorbance of bio-ionic lubricants have been studied by using dynamic light scattering and ultraviolet–visible spectroscopy. Friction and wear effects of bio-ionic lubricants have been evaluated using ball-on-disc tribotester at different speeds and loads.
Findings
The rheological properties of canola oil have been significantly improved with addition of IL. Minimum coefficient of friction and wear have been observed at an optimum concentration of 2 Wt.% of IL. Atomic force microscopy reveals that worn-out surface of ball lubricated with canola oil containing 2 Wt.% IL has smooth surface.
Originality/value
This study demonstrates that halogen-free has the potential to accommodate as an incipient class of EALs.
Keywords
Acknowledgements
The authors sincerely acknowledge the financial support from Department of Science and Technology, Ministry of Science and Technology, Government of India under PURSE program with Grant No. SR/PURSE/2/40G.
Statements and declarations: The authors declare that this manuscript is original, has not been published before and is not currently being considered for publication elsewhere. The authors confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. The authors further confirm that the order of authors listed in the manuscript has been approved by all of them. The authors understand that the corresponding author is the sole contact for the editorial process. He/she is responsible for communicating with the other authors about progress, submissions of revisions and final approval of proofs.
Conflicts of interest/Completing interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Citation
Kumar, G. and Garg, H.C. (2022), "Influence of a halogen free ionic liquid on the rheological and tribological characteristics of canola oil", Industrial Lubrication and Tribology, Vol. 74 No. 8, pp. 914-921. https://doi.org/10.1108/ILT-12-2021-0487
Publisher
:Emerald Publishing Limited
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