Nano-tribological characterisation of palm oil-based trimethylolpropane ester for application as boundary lubricant
Nano-tribological characterisation of palm oil-based trimethylolpropane ester for application as boundary lubricant
To isolate shearing of boundary film from direct surface-to-surface asperity interactions, the study determines boundary lubrication properties of palm oil-based TMPE (PTMPE) using Lateral Force Microscopy coupled with fluid imaging. PTMPE is produced through a series of 3-step transesterification processes, converting palm oil (PO) into palm methyl ester (PME) and finally into PTMPE. It is shown that PME generates the lowest friction. However, using Eyring thermal activation energy approach, PME is shown to possess less desirable load bearing property, portraying a form of stiction or adhesive nature. Even though friction is higher, PTMPE exhibits better load bearing ability, demonstrating the onset of lubricant laminar flow due to increased hydrodynamic effect, which is not observed for the PO and PME measurements.
Biodegradable lubricant, Boundary lubrication, Nano-scale friction, Palm oil-based trimethylolpropane ester
1-9
Hamdan, S. H.
9f001b31-cf6c-4a8b-b048-2db0f52d50fb
Chong, W.W.F.
bd35fdf8-fa6d-4330-8bac-ae20cc8fc58e
Ng, J.H.
4c9c51bd-1cfc-46c0-b519-23b77566fe50
Chong, C.T.
65b12c86-8a3e-45e8-873c-7db0c8b2cbd9
Zhang, H.
e175adaa-3862-480b-845c-0c0e1ab51f35
1 November 2018
Hamdan, S. H.
9f001b31-cf6c-4a8b-b048-2db0f52d50fb
Chong, W.W.F.
bd35fdf8-fa6d-4330-8bac-ae20cc8fc58e
Ng, J.H.
4c9c51bd-1cfc-46c0-b519-23b77566fe50
Chong, C.T.
65b12c86-8a3e-45e8-873c-7db0c8b2cbd9
Zhang, H.
e175adaa-3862-480b-845c-0c0e1ab51f35
Hamdan, S. H., Chong, W.W.F., Ng, J.H., Chong, C.T. and Zhang, H.
(2018)
Nano-tribological characterisation of palm oil-based trimethylolpropane ester for application as boundary lubricant.
Tribology International, 127, .
(doi:10.1016/j.triboint.2018.05.036).
Abstract
To isolate shearing of boundary film from direct surface-to-surface asperity interactions, the study determines boundary lubrication properties of palm oil-based TMPE (PTMPE) using Lateral Force Microscopy coupled with fluid imaging. PTMPE is produced through a series of 3-step transesterification processes, converting palm oil (PO) into palm methyl ester (PME) and finally into PTMPE. It is shown that PME generates the lowest friction. However, using Eyring thermal activation energy approach, PME is shown to possess less desirable load bearing property, portraying a form of stiction or adhesive nature. Even though friction is higher, PTMPE exhibits better load bearing ability, demonstrating the onset of lubricant laminar flow due to increased hydrodynamic effect, which is not observed for the PO and PME measurements.
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More information
Accepted/In Press date: 27 May 2018
e-pub ahead of print date: 30 May 2018
Published date: 1 November 2018
Keywords:
Biodegradable lubricant, Boundary lubrication, Nano-scale friction, Palm oil-based trimethylolpropane ester
Identifiers
Local EPrints ID: 424859
URI: http://eprints.soton.ac.uk/id/eprint/424859
ISSN: 0301-679X
PURE UUID: bfe4042c-2233-44c5-b2d2-403d8f677912
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Date deposited: 05 Oct 2018 11:50
Last modified: 26 Nov 2021 00:15
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Contributors
Author:
S. H. Hamdan
Author:
W.W.F. Chong
Author:
C.T. Chong
Author:
H. Zhang
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