Studies on boundary lubrication properties of oxidised coconut and soy bean oils

Mannekote, Jagadeesh K.; Kailas, Satish V.

doi:10.1002/ls.101

Cited by 37 publications

(19 citation statements)

References 19 publications

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“…It can be seen that an increase in kinematic viscosity was observed with usage of the oil in the engine. This is basically because of the oxidation of the oil samples 30) . It was also noticed that the lubricant was contaminated with fuel during use.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine

Mannekote

Kailas

2011

Tribology Online

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In the present work the evaluation of coconut and palm oil as lubricants in four-stroke engine was carried out and the performance was compared with commercially available engine oil. The tribological properties of oil samples collected from the engine at regular interval were evaluated by means of four ball tester. The emissions from engine were monitored by using exhaust gas analyzer. It was observed that antiwear properties of fresh vegetable base oils and engine oil were comparable at ambient conditions. The observed deviation with usage was linked to the oxidation and the absence of additives in vegetable oil. The increased wear with commercial engine oil was due to depletion of additives. Increased fuel efficiency and reduction in the concentration of oxides of carbon and nitrogen in the emission observed with vegetable oil based lubricant was linked to its high flash point.

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Section: Resultsmentioning

confidence: 99%

Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine

Mannekote

Kailas

2011

Tribology Online

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“…Coconut oil with more than 90% saturated fatty acids is known to be non-toxic to aquatic system. Higher percentage of saturation in coconut oil ensures higher stability to thermal degradation and oxidative degradation of oil [29]. Being highly resistant to oxidative depletion, coconut oil produces least amount of oxides and peroxides, which could otherwise be toxic to living beings.…”

Section: Discussionmentioning

confidence: 99%

Eco-Friendly, Non-Toxic Cutting Fluid for Sustainable Manufacturing and Machining Processes

Somashekaraiah

Suvin²,

Gnanadhas

et al. 2016

Tribology Online

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Mineral oils, chemically synthesized emulsifiers, and additives are the basic ingredients of commercially available metal working fluids. Its application in metal cutting have earned widespread acceptance all over the world. However, their harmful effects on the environment and life threatening health hazards to workers are of great concern and calls for a better alternative. In this present study a green metalworking fluid / green cutting fluid (GCF) was formulated and the performance was evaluated comparing with the commercial metal working fluid (COM) used in industries for machining processes. The obtained eco-friendly formulation has material properties equivalent to the commercial formulation without any environmental hazard. GCF is comparable to COM in corrosion prevention, inhibition of microbial growth and other machining processes. It was reported that vegetable oil based green cutting fluids have more of Gram-negative bacterial growth where as mineral oil based ones have more of Gram-positive bacteria. These bacteria cause environmental hazards and antimicrobials can be included for better antimicrobial properties. GCF supersedes COM by being non-toxic at LC50 >1000 mg/L and COM being toxic at LC50 < 100 mg/L according to OECD 203 tests methods. GCF, produced only from renewable sources is non-toxic and biodegradable and helps contribute towards green and sustainable manufacturing processes without any environmental pollution or hazards.

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“…Data on the quality of other raw materials used in topical skin-care formulations are available in the literature (Kumar & Krishna, 2015;Mannekote & Kailas, 2009;Thanonkaew et al, 2015). However, the quality may vary widely depending on the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Lipid Oxidation and Degradation Products in Raw Materials: Low‐Fat Topical Skin‐Care Formulations

Thomsen

Taylor

Hyldig

et al. 2018

J Americ Oil Chem Soc

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Topical skin formulations with a lipid content below 15% were stored for 6 months at 5, 20, or 40 °C or for 2 weeks at 50 °C in darkness or at 20 °C with exposure to light for 6 months. The volatile lipid‐oxidation compounds formed during this storage period were compared to those formed in the raw materials during 3 months of accelerated stability storage at 40 °C. The volatile compounds were collected by dynamic headspace and analyzed using gas chromatography–mass spectrometry. It was possible to link eight out of nine volatile compounds detected during storage of topical skin formulations to the raw materials. In addition, a possible link between the appearance of butane nitrile and the decomposition of an initiator used for polyacrylate crosspolymer‐6 production was observed. The polymer may originate from texture modifiers added to the topical skin formulation or from plastics used for packaging of topical skin formulations. Furthermore, six well‐known lipid‐oxidation and nonenzymatic browning products were suggested to originate from the two raw materials, tricaprylin/tricaprin and coconut oil.

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Studies on boundary lubrication properties of oxidised coconut and soy bean oils

Cited by 37 publications

References 19 publications

Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine

Experimental Investigation of Coconut and Palm Oils as Lubricants in Four-Stroke Engine

Eco-Friendly, Non-Toxic Cutting Fluid for Sustainable Manufacturing and Machining Processes

Lipid Oxidation and Degradation Products in Raw Materials: Low‐Fat Topical Skin‐Care Formulations

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