Compatibility of Ionic Liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as Additives in Bio-Based Lubricant

Syahir, AZ; Harith, MH; Zulkifli, NWM; Masjuki, HH; Kalam, MA; Yusoff, MNAM; Zulfattah, ZM; Ibrahim, TM

Compatibility of Ionic Liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as Additives in Bio-Based Lubricant

Syahir, AZ Harith, MH Zulkifli, NWM Masjuki, HH Kalam, MA Yusoff, MNAM Zulfattah, ZM Ibrahim, TM

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Publisher:: ASME
Publication Type:: Journal Article
Citation:: Journal of Tribology, 2020, 142, (6)
Issue Date:: 2020-06-01

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Field	Value	Language
dc.contributor.author	Syahir, AZ
dc.contributor.author	Harith, MH
dc.contributor.author	Zulkifli, NWM
dc.contributor.author	Masjuki, HH
dc.contributor.author	Kalam, MA
dc.contributor.author	Yusoff, MNAM
dc.contributor.author	Zulfattah, ZM
dc.contributor.author	Ibrahim, TM
dc.date.accessioned	2022-10-30T20:26:45Z
dc.date.available	2022-10-30T20:26:45Z
dc.date.issued	2020-06-01
dc.identifier.citation	Journal of Tribology, 2020, 142, (6)
dc.identifier.issn	0742-4787
dc.identifier.issn	1528-8897
dc.identifier.uri	http://hdl.handle.net/10453/162961
dc.description.abstract	This study reports the tribological characteristics of trimethylolpropane trioleate (TMPTO) additivated with antifriction and antiwear additives, which are ionic liquid (IL), glycerol monooleate (GMO), and molybdenum dithiocarbamate (MoDTC). In addition, to obtain the ideal composition that results in the minimal coefficient of friction (COF), optimization tool was employed using response surface methodology (RSM) technique with the Box-Behnken design. The IL used in this study was a phosphorus-type IL, namely trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl) phosphinate, [P14,6,6,6][TMPP]. The resulting COF and worn surface morphology were investigated using high-frequency reciprocating rig (HFRR) tribotester and scanning electron microscope with energy-dispersive X-ray spectroscopy (SEM-EDX), respectively. From the experimental results, a second-order polynomial mathematical model was constructed and able to statistically predict the resulting COF. The optimized values that resulted in the lowest average COF of 0.0458 were as follows: 0.93 wt% IL, 1.49 wt% GMO, and 0.52 wt% MoDTC. The addition of IL into neat base oil managed to reduce the COF, while the combination of IL, GMO, and MoDTC at optimum concentration further reduced the average COF and wear as observed through SEM micrographs when compared with those of additive-free TMPTO, suggesting that GMO and MoDTC were compatible to be used with IL.
dc.language	English
dc.publisher	ASME
dc.relation.ispartof	Journal of Tribology
dc.relation.isbasedon	10.1115/1.4046122
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.title	Compatibility of Ionic Liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as Additives in Bio-Based Lubricant
dc.type	Journal Article
utslib.citation.volume	142
utslib.for	0904 Chemical Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-10-30T20:26:44Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	142
utslib.citation.issue	6

Abstract:

This study reports the tribological characteristics of trimethylolpropane trioleate (TMPTO) additivated with antifriction and antiwear additives, which are ionic liquid (IL), glycerol monooleate (GMO), and molybdenum dithiocarbamate (MoDTC). In addition, to obtain the ideal composition that results in the minimal coefficient of friction (COF), optimization tool was employed using response surface methodology (RSM) technique with the Box-Behnken design. The IL used in this study was a phosphorus-type IL, namely trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl) phosphinate, [P14,6,6,6][TMPP]. The resulting COF and worn surface morphology were investigated using high-frequency reciprocating rig (HFRR) tribotester and scanning electron microscope with energy-dispersive X-ray spectroscopy (SEM-EDX), respectively. From the experimental results, a second-order polynomial mathematical model was constructed and able to statistically predict the resulting COF. The optimized values that resulted in the lowest average COF of 0.0458 were as follows: 0.93 wt% IL, 1.49 wt% GMO, and 0.52 wt% MoDTC. The addition of IL into neat base oil managed to reduce the COF, while the combination of IL, GMO, and MoDTC at optimum concentration further reduced the average COF and wear as observed through SEM micrographs when compared with those of additive-free TMPTO, suggesting that GMO and MoDTC were compatible to be used with IL.

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http://hdl.handle.net/10453/162961