Influence of Organic Friction Modifiers on Surface Energy Properties in Polyalphaolefin (PAO) Blends
The shift towards alternative fuels like hydrogen, ethanol, and other sustainable energy sources drives the need for highperformance lubricants to handle new thermal and chemical challenges. Synthetic polyalphaolefins (PAOs) are commonly utilised due to their thermal stability, high viscosity...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Penerbit UTM Press
2025
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/48689/1/2_242_%289-15%29.pdf http://ir.unimas.my/id/eprint/48689/ https://jtse.utm.my/index.php/jtse/article/view/242 https://doi.org/10.11113/jtse.v12.242 |
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| Summary: | The shift towards alternative fuels like
hydrogen, ethanol, and other sustainable
energy sources drives the need for highperformance lubricants to handle new thermal
and chemical challenges. Synthetic
polyalphaolefins (PAOs) are commonly utilised
due to their thermal stability, high viscosity
index, and reliable low-temperature flow. This
study investigates the impact of organic friction
modifiers—oleic acid (OA) and stearic acid
(SA)—on PAO-based lubricants' tribological and
interfacial characteristics. Blends containing
0.1–0.5 wt% OA or SA were tested. Contact
angle measurements indicated that the 0.3 wt%
OA blend significantly improved surface
wettability, achieving the lowest contact angles
on glass and steel surfaces. Surface energy
analysis revealed decreased surface tension
and better adhesion for the 0.3 wt% OA blend.
Friction testing showed that the 0.3 wt% OA
blend recorded the lowest coefficient of
friction; however, wear resistance largely
remained unaffected. These findings indicate
that OA improves frictional performance in PAO
lubricants, presenting a promising avenue for
optimising formulations for future energy
systems |
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