Cyriac, F., Tee, X. Y., & Chow, P. S. (2023). Tribological performance of polymeric friction modifiers under sliding rolling contact condition. Lubrication Science. Portico. https://doi.org/10.1002/ls.1678
Abstract:
AbstractThe tribological performance of two polymeric friction modifiers, one based on an ester‐based compound and another based on an ethoxylated fatty ester and an organic friction modifier, oleamide, was studied at 50, 90 and 140°C using a Mini Traction Machine equipped with optical interferometry and electrical contact resistance. The ability to form surface film is found to vary among the friction modifiers and with temperature and rubbing duration. Despite a thinner film being formed, polymeric friction modifier (PFMs) exhibited lower friction and wear than oleamide at all the studied temperatures. Further, the PFMs reduced boundary friction more effectively at higher temperature. In accordance with lower boundary friction, a smoother surface topography characterized by low wear was exhibited by PFM lubricated surfaces at higher temperatures. Scanning electron microscopy‐energy dispersive x‐ray analysis and time‐of‐flight secondary ion mass spectrometry provided insights on the tribofilm formation. The improvement in the tribological performance of PFMs is attributed to temperature‐induced conformation transition of adsorbed polymer chains on the surface. The results are corroborated by data obtained from dynamic light scattering and gel permeation chromatography.
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Publisher Copyright
Funding Info:
This research / project is supported by the Agency for Science, Technology and Research - IAF-PP Spec Chem
Grant Reference no. : A1786a0026
Description:
This is the peer reviewed version of the following article: Cyriac, F., Tee, X. Y., & Chow, P. S. (2023). Tribological performance of polymeric friction modifiers under sliding rolling contact condition. Lubrication Science. Portico. https://doi.org/10.1002/ls.1678, which has been published in final form at doi.org/10.1002/ls.1678. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited."