Friction properties of vegetable oils

Biresaw, Girma; Adhvaryu, Atanu; Erhan, Sevim Z.

doi:10.1007/s11746-003-0760-7

Cited by 60 publications

(64 citation statements)

References 16 publications

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“…The vegetable oils that have been evaluated tribologically include coconut oil 12 , safflower oil 10 , corn oil, rapeseed oil 34 , jojoba oil 35 , olive oil 14 , castor oil 14 , palm oil 15 and soybean oil 31 .…”

Section: Tribological Performance Of Vegetable Oils As Biolubricants mentioning

confidence: 99%

Friction and wear response of vegetable oils and their blends with mineral engine oil in a reciprocating sliding contact at severe contact conditions

Bahari

Lewis

Slatter

2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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Although many studies investigating the tribological performance of pure vegetable oils have been conducted, a better understanding of vegetable oil tribological performance at extreme conditions is still needed. Similarly, little work has been carried out to study the influence of the vegetable oils on the performance of a lubricant formed from a blend of vegetable oil and conventional mineral engine oil. This work presents the tribological performance of vegetable oils, and their blends with mineral oil, in a high temperature and contact pressure reciprocating contact. Palm and soybean based vegetable oils were mixed with a commercial mineral engine oil at a 1:1 ratio by volume. The conventional mineral oil was also tested to provide a benchmark. The pure palm oil exhibited lower friction than soybean oil, but for wear performance, this was reversed. The friction performance of the palm oil was competitive to that of the mineral engine oil. The mineral engine oil was far superior in wear resistance over both vegetable oils. When blended with mineral engine oil both vegetable oils demonstrated a reduction in coefficient of friction when compared to their pure oil states. An improvement in wear performance was observed for both a blend of palm oil and mineral engine oil (25% improvement) and that of soybean and mineral engine oil (27% improvement). This work shows that for palm oil and soybean oil, the performance of a blended oil is influenced by its vegetable oil component and that tribological characteristics of vegetable oils are dominant. That said, the significant limitation of these vegetable oils is their ability to provide a satisfactory level of wear resistance. It is suggested that any future work in this area should have a greater emphasis on the enhancement of wear resistance.

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Section: Tribological Performance Of Vegetable Oils As Biolubricants mentioning

confidence: 99%

Friction and wear response of vegetable oils and their blends with mineral engine oil in a reciprocating sliding contact at severe contact conditions

Bahari

Lewis

Slatter

2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Alternatively, environmentally friendly lubricants should be used wherever possible (4). Due to a combination of biodegradability, renewability, and excellent lubrication performance, vegetable oils are a potential source of environmentally favorable (ecofriendly) lubricants (6)(7)(8)(9)(10)(11). A majority of vegetable oils consist of mainly two broad chemical categories: triesters and monoesters.…”

Section: Introductionmentioning

confidence: 99%

“…Most vegetable oils have separate regions of polar and nonpolar groups in the same molecule. The presence of polar groups in vegetable oil makes it amphiphilic, thus allowing it to be used as both boundary and hydrodynamic lubricant (8,14). In addition, vegetable oils have many advantages such as low volatility due to high molecular weight triacylglycerol molecule, good boundary lubrication characteristics due to the polar ester group and high viscosity index, high solubilizing power for polar contaminants and additive molecules, and lower cost than synthetic oils (4,7,9,(15)(16)(17)(18)(19)(20)(21).…”

Section: Introductionmentioning

confidence: 99%

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Lubricants from renewable energy sources – a review

Soni

Agarwal

2014

Green Chemistry Letters and Reviews

107

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Lubricant oils are known to decrease the friction coefficient between two contacting surfaces. It is essential for the correct function of almost the totality of mechanical machinery working in the entire world. Lubricant oils consist of about 80% of oily base stocks which attributes to their properties of viscosity, stability, and pour point to the lubricant plus additives supplemented to improve these properties. Petroleum lubricants are usually environmentally unacceptable due to their low biodegradability and toxicity. These oils contaminate the air, soil, and drinking water and affect human and plant life to a great extent. Thus, the demand for environmentally acceptable lubricants is increasing along with the public concerns for a pollution-free environment. Plant oils are promising as base fluid for biolubricants because of their excellent lubricity, biodegradability, viscosity-temperature characteristics, and low volatility. The purpose of this paper is to present a survey of the current status of biolubricating oil. This research provides an overview on the synthesis, tribochemical behavior; the effect of structure on friction/wear, load-bearing capacity, resistance to rise in specimen temperature, and varying response of antiwear/extreme-pressure additives in the presence of vegetable oil/derivative structures has also been discussed. Though a significant number of papers have been published in this area, there is still much to explore. A proper selection of base oil and additives is therefore essential for an efficient synthesis of biolubricating oil.

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“…Oleic acid cis-9-octadecenoic acid is one of the most important fatty acids in nature; it can be produced from plant oils 33 , its esters can be applied as biolubricant basestocks 34 . These fi nding promote us to synthesis alkyl 9-alkyloxy-10-hydroxyoctadecanoate AAHOD 3-11 through ring opening reaction of epoxidized oleic acid.…”

Section: Products Propertiesmentioning

confidence: 99%