Castor oil as potential multifunctional additive in the formulation of eco-friendly lubricant

Ghosh, Pranab; Hoque, Mainul; Karmakar, Gourab

doi:10.1007/s00289-017-2047-6

Cited by 35 publications

(21 citation statements)

References 41 publications

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“…Linseed oil, soybean oil, sunflower oil, castor oil, and so forth contain more than 80% unsaturated acids, and therefore can easily be chemically modified. So the derivatives of these oils are largely applied to formulate biolubricants (base stocks/additives) [17,18,20,21,29].…”

Section: Chemical and Physical Properties/characteristics Of Vegetablmentioning

confidence: 99%

“…The same group also reported the preparation of bio-based lubricant additives that comprise a combination of meadowfoam oil as a triglyceride or a wax ester, sulfurized triglyceride meadowfoam oil or sulfurized wax ester of meadowfoam oil, and phosphate adducts of triglyceride meadowfoam oil or wax ester of meadowfoarn oil [16]. Few bio-based additives showed multifunctional performances [17][18][19][20]. Therefore, we do not need to blend different kinds of additives with the base stock.…”

Section: Introductionmentioning

confidence: 99%

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Chemically Modifying Vegetable Oils to Prepare Green Lubricants

2017

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Chemically modifying vegetable oils to produce an alternative to petroleum-based materials is one of the most important emerging industrial research areas today because of the adverse effects of petroleum products on the environment and the shortage of petroleum resources. Biolubricants, bioplasticizers, non-isocyanate polyurethanes, biofuel, coating materials, biocomposites, and other value-added chemicals can easily be produced by chemically modifying vegetable oils. This short review discusses using vegetable oils or their derivatives to prepare lubricants that are environmentally safe. Chemically modified vegetable oils are generally used as base fluids to formulate environmentally friendly lubricants. Reports of their application as sustainable additives have attracted special attention recently because of their enhanced multifunctional performances (single additives perform several functions, i.e., viscosity index improver, pour point depressant, antiwear products) and biodegradability compared with commercial additives. Here, we have reviewed the use of chemically modified vegetable oils as base fluids and additives to prepare a cost-effective and environmentally friendly lubricant composition.

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Section: Chemical and Physical Properties/characteristics Of Vegetablmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemically Modifying Vegetable Oils to Prepare Green Lubricants

2017

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“…Masuda et al proved the incompatibility of metallic nanofillers with lubricant and concluded that surface activity was responsible for this incompatibility [28]. Not only the particulate additives play an important role in enhancing the tribological properties, but blending bio-based oils into lubricants also showed multi-functional behaviour [29][30][31][32]. Li et al have demonstrated the application of natural garlic oil as a high performance and extreme pressure additive for lubricants [33].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester

Hemanth

Rakesh

Adarsh

2020

Advances in Tribology

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The present work was aimed to study the friction and wear behaviour of graphene nanoplatelets (GNPs) under extreme pressure conditions as an anti-weld additive for neem oil. The effect of neem oil, blended with various loading of GNPs on the friction and wear characteristics has been investigated. From the experimental results, it was found that 1 wt.% of GNPs in neem oil showed the least coefficient of friction and smoother wear scar diameter. The extreme pressure test was performed on neem oil with and without GNPs as per ASTM standards. The extreme pressure test results indicated the improvement in seizure load of neem oil by 27.8% at 0.5 wt.% of GNPs as compared to pure neem oil. Optical microscopy of worn steel ball surface revealed the pit formation and the formation of wedge cutting edge in GNPs modified neem oil.

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“…All these monomers are mostly obtained from petro-based resources, which can lead to environmental concerns in the next few years (Covitch and Trickett, 2015;Nassar, 2008). Recently, due to their specific structure with long aliphatic chains combined with a polar head, vegetable oils (VO)-based polymers resulting from direct radical polymerization have shown promising properties as VII in various mineral lube oils (Ghosh et al, 2018;Ghosh and Karmakar, 2014;Ghosh and Upadhyay, 2016). However, even if they demonstrated good properties to enhance the field service performance of engine oil, VO generally showed poor reactivity in radical processes (Montero de Espinosa and Meier, 2011).…”

Section: Introductionmentioning

confidence: 99%

Epoxidized Oleic Acid‐Based Polymethacrylates as Viscosity Index Improvers

Lomège

Lapinte

Négrell

et al. 2019

J Americ Oil Chem Soc

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This study reports two routes for the synthesis of epoxidized oleic acid (OLA)‐based polymethacrylates. The first one consisted of the synthesis followed by epoxidation of the OLA‐based methacrylate, 2‐(methacryloyloxy)ethyl oleate (MAEO), prior to its radical polymerization. In the second pathway, MAEO was first homopolymerized to afford poly(2‐(methacryloyloxy)ethyl oleate) (PMAEO) and, then, the internal double bonds of the oleate were epoxidized at different yields ranging from 20% to 100%. All polymeric structures were confirmed using 1H nuclear magnetic resonance (NMR), and characterized through size‐exclusion chromatography (SEC), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) analyses. The resulting polymers were then blended at 5 wt.% in a mineral paraffinic oil (MPO) and in a biobased organic triacylglycerol oil (OTO) to be evaluated as viscosity index improvers (VII). The partially epoxidized polymers up to 40% were soluble in MPO. According to a rheological study, the oil‐soluble epoxidized polymers resulting from the epoxidation of PMAEO exhibited a much higher influence on oil viscosities at high temperatures than at low temperatures compared to the low‐epoxidized PMAEO molecular weight obtained by the first strategy. Additionally, the viscosity indices of both lubricating oils were significantly improved with the addition of the epoxidized OLA‐based polymers resulting from the epoxidation of PMAEO, which confirmed their efficiency as VII.

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Castor oil as potential multifunctional additive in the formulation of eco-friendly lubricant

Cited by 35 publications

References 41 publications

Chemically Modifying Vegetable Oils to Prepare Green Lubricants

Chemically Modifying Vegetable Oils to Prepare Green Lubricants

Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester

Epoxidized Oleic Acid‐Based Polymethacrylates as Viscosity Index Improvers

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