Coconut oil as base oil for industrial lubricants—evaluation and modification of thermal, oxidative and low temperature properties

Jayadas, N. H.; Nair, K. Prabhakaran

doi:10.1016/j.triboint.2005.06.006

Cited by 303 publications

(176 citation statements)

References 8 publications

Supporting

Mentioning

169

Contrasting

Unclassified

Order By: Relevance

“…Other than DSC, TGA has been widely applied in the monitoring of oxidative stability, thermal behavior, kinetic parameters and activation energy in various oil samples [13][14][15][16][17] . It can also be used to determine fraction volatile components by monitoring the weight change as the sample is heated.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Oxidative Decomposition Behavior of Vegetable Oils and Its Correlation with Iodine Value Using Thermogravimetric Analysis

2008

View full text Add to dashboard Cite

A comparative study of oxidative decomposition behavior of a wide range of vegetable oils and its correlation to iodine value (IV) using thermogravimetric analysis (TGA) was described. The oxidative decomposition of saturated fatty acids shows weight loss before 385 while oxidative decomposition of unsaturated fatty acids shows lower rate of weight loss (dWt/dt) compared to saturated fatty acids due to the oxidation process ('up taking' of oxygen) involving breaking down of double bond to form primary and secondary oxidation products, which leads to some weight gain in the sample before being decomposed. The relative differences in the dWt/dt (%/min) of the both fatty acids give different decomposition steps in TGA thermogram, enabling IV to be determined through the percentage weight loss of saturated fatty acids per 100% of total sample weight (excluding weight loss from moisture and volatile compounds). Therefore, TGA method can be used as an alternative method for IV determination with no sample predilution and solvent consumption. Using the TGA methods, good correlation (r = 0.9889) with standard AOCS method was achieved.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative Study on Oxidative Decomposition Behavior of Vegetable Oils and Its Correlation with Iodine Value Using Thermogravimetric Analysis

2008

View full text Add to dashboard Cite

show abstract

“…It can be transformed by the organism into series of long fatty acids chains, which are the precursors of eicosanoids (Nasri et al, 2005). The total saturated fatty acids (SFA) of green-tea seed oil is 20.86%, which makes it a strong resistant to oxidative rancidity (Jayadas and Nair, 2006).…”

Section: Fatty Acid Composition Of Two Kinds Of Tea Seed Oilsmentioning

confidence: 99%

Comparison of the Characteristics of Two Kinds of Tea Seed Oils: Oil-tea Seed Oil and Green-Tea Seed Oil

Weng¹,

Yun²,

Zhang³

2018

JFS

View full text Add to dashboard Cite

Physicochemical properties, fatty acid composition, antioxidant compounds and oxidative stability of oil-tea seed oil (Camellia oleifera Abel.) and green-tea seed oil (Camellia sinensis O. Ktze.) were investigated. The refractive index, saponification value, iodine value, acid value, peroxide value, unsaponifiables were determined to assess the quality of the oils. The major fatty acids of green-tea seed oil and oil-tea seed oil were oleic acid, linoleic acid and palmitic acid. Green-tea seed oil was typical oleic-linoleic-oil with 52.13% oleic acid and 24.32% linoleic acid level, whereas oil-tea seed oil was typical oleic-oil with very high oleic acid level (73.67%). The amount of total phenols, α-tocopherol and β-carotene of green-tea seed oil were 8.68 mg/kg, 160.33 mg/kg, 3.20 mg/kg, respectively, whereas they were 17.90

show abstract

“…In this study, we have used coconut oil as a base for GCF. Coconut oil contains more than 90% saturated fatty acids and is more resistant to oxidative degradation [15]. Coconut oil as neat cutting fluid has better cutting force in comparison with other vegetable oils, which include groundnut oil, palm kernel oil etc.…”

Section: Introductionmentioning

confidence: 99%

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

Somashekaraiah

Suvin²,

Gnanadhas

et al. 2016

Tribology Online

View full text Add to dashboard Cite

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.

show abstract

Coconut oil as base oil for industrial lubricants—evaluation and modification of thermal, oxidative and low temperature properties

Cited by 303 publications

References 8 publications

Comparative Study on Oxidative Decomposition Behavior of Vegetable Oils and Its Correlation with Iodine Value Using Thermogravimetric Analysis

Comparative Study on Oxidative Decomposition Behavior of Vegetable Oils and Its Correlation with Iodine Value Using Thermogravimetric Analysis

Comparison of the Characteristics of Two Kinds of Tea Seed Oils: Oil-tea Seed Oil and Green-Tea Seed Oil

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

Contact Info

Product

Resources

About