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Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant

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...

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Main Authors: Syahir, A. Z., Harith, M. H., Zulkifli, N. W. M., Masjuki, H. H., Kalam, M. A., Yusoff, M. N. A. M., Zulfattah, Z. M., Ibrahim, T. M.
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Published: ASME 2020
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TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/36673/
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spelling my.um.eprints.366732024-11-04T02:27:13Z http://eprints.um.edu.my/36673/ Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant Syahir, A. Z. Harith, M. H. Zulkifli, N. W. M. Masjuki, H. H. Kalam, M. A. Yusoff, M. N. A. M. Zulfattah, Z. M. Ibrahim, T. M. TJ Mechanical engineering and machinery 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, P-14,P-6,P-6,P-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. ASME 2020-06 Article PeerReviewed Syahir, A. Z. and Harith, M. H. and Zulkifli, N. W. M. and Masjuki, H. H. and Kalam, M. A. and Yusoff, M. N. A. M. and Zulfattah, Z. M. and Ibrahim, T. M. (2020) Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant. Journal of Tribology-Transactions of the Asme, 142 (6). ISSN 07424787, DOI https://doi.org/10.1115/1.4046122 <https://doi.org/10.1115/1.4046122>. 10.1115/1.4046122
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Syahir, A. Z.
Harith, M. H.
Zulkifli, N. W. M.
Masjuki, H. H.
Kalam, M. A.
Yusoff, M. N. A. M.
Zulfattah, Z. M.
Ibrahim, T. M.
Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
description 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, P-14,P-6,P-6,P-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.
format Article
author Syahir, A. Z.
Harith, M. H.
Zulkifli, N. W. M.
Masjuki, H. H.
Kalam, M. A.
Yusoff, M. N. A. M.
Zulfattah, Z. M.
Ibrahim, T. M.
author_facet Syahir, A. Z.
Harith, M. H.
Zulkifli, N. W. M.
Masjuki, H. H.
Kalam, M. A.
Yusoff, M. N. A. M.
Zulfattah, Z. M.
Ibrahim, T. M.
author_sort Syahir, A. Z.
title Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
title_short Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
title_full Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
title_fullStr Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
title_full_unstemmed Compatibility of ionic liquid with Glycerol Monooleate and Molybdenum Dithiocarbamate as additives in bio-based lubricant
title_sort compatibility of ionic liquid with glycerol monooleate and molybdenum dithiocarbamate as additives in bio-based lubricant
publisher ASME
publishDate 2020
url http://eprints.um.edu.my/36673/
_version_ 1814933204927250432
score 13.211869

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