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  1. Journal of the American Oil Chemists' Society
  2. Journal of the American Oil Chemists' Society : Volume 90
  3. Journal of the American Oil Chemists' Society : Volume 90, Issue 6, June 2013
  4. Tribological Properties of Biobased Ester Phosphonates
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Journal of the American Oil Chemists' Society : Volume 94
Journal of the American Oil Chemists' Society : Volume 93
Journal of the American Oil Chemists' Society : Volume 92
Journal of the American Oil Chemists' Society : Volume 91
Journal of the American Oil Chemists' Society : Volume 90
Journal of the American Oil Chemists' Society : Volume 90, Issue 12, December 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 11, November 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 10, October 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 9, September 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 8, August 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 7, July 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 6, June 2013
Rapid FT-NIR Analysis of Edible Oils for Total SFA, MUFA, PUFA, and Trans FA with Comparison to GC
Detection of 430 Fatty Acid Methyl Esters from a Transesterified Butter Sample
Physical Properties of Aqueous Solutions of Pectin Containing Sunflower Wax
Pro- and Antioxidative Effect of α-Tocopherol on Edible Oils, Triglycerides and Fatty Acids
The Ultrasonic Investigation of Phase Transition in Olive Oil up to 0.7 GPa
Effect of Liquid Oil on the Distribution and Reactivity of a Hydrophobic Solute in Solid Lipid Nanoparticles
No Evidence Found for Diels–Alder Reaction Products in Soybean Oil Oxidized at the Frying Temperature by NMR Study
Fatty Acid Profile of Kenaf Seed Oil
Growth and Biomass Characteristics of Picochlorum oklahomensis and Nannochloropsis oculata
Evaluation of Potential and Real Quality of Virgin Olive Oil from “Campos de Hellín” (Albacete, Spain)
Effect of UV Processing Treatments on Soy Oil Conjugated Linoleic Acid Yields and Tocopherols Stability
Shear and Rapeseed Oil Addition Affect the Crystal Polymorphic Behavior of Milk Fat
Pro-Oxidant Effects of β-Carotene During Thermal Oxidation of Edible Oils
Tribological Properties of Biobased Ester Phosphonates
Coloration Process in the Sulfonation of Fatty Acid Methyl Ester with Sulfur Trioxide
Synthesis of Chloro Alkoxy and Alkoxy Derivatives of Methyl Oleate
Chemo-enzymatic Synthesis of Novel β-Hydroxy-β-methylbutryric Acid (HMB)–Medium Chain Triacylglycerol (MCT) Complexes
Journal of the American Oil Chemists' Society : Volume 90, Issue 5, May 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 4, April 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 3, March 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 2, February 2013
Journal of the American Oil Chemists' Society : Volume 90, Issue 1, January 2013
Journal of the American Oil Chemists' Society : Volume 89
Journal of the American Oil Chemists' Society : Volume 88
Journal of the American Oil Chemists' Society : Volume 87
Journal of the American Oil Chemists' Society : Volume 86
Journal of the American Oil Chemists' Society : Volume 85
Journal of the American Oil Chemists' Society : Volume 84
Journal of the American Oil Chemists' Society : Volume 83
Journal of the American Oil Chemists' Society : Volume 82
Journal of the American Oil Chemists' Society : Volume 81
Journal of the American Oil Chemists' Society : Volume 80
Journal of the American Oil Chemists' Society : Volume 79
Journal of the American Oil Chemists' Society : Volume 78
Journal of the American Oil Chemists' Society : Volume 77
Journal of the American Oil Chemists' Society : Volume 76
Journal of the American Oil Chemists' Society : Volume 75
Journal of the American Oil Chemists' Society : Volume 74

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Tribological Properties of Biobased Ester Phosphonates

Content Provider SpringerLink
Author Biresaw, Girma Bantchev, Grigor B.
Copyright Year 2013
Abstract Three phosphonate derivatives of methyl oleate (MeO) were chemically synthesized in a radical chain reaction and their physical and tribological properties investigated. The phosphonates differed from each other in the structure of the alkoxy groups attached to the phosphorous, which were as follows: methoxy, ethoxy, and n-butoxy. Phosphonylation eliminated the unsaturation in MeO and also introduced branching. The phosphonate oils had higher density and viscosity than MeO, which was attributed to the contribution of the heavier phosphorus atom in their structures, and to their higher molecular weights, respectively. The phosphonates also displayed improved oxidation stability and cold flow properties, which were attributed to the elimination of the double bond and the introduction of branching in their molecular structures, respectively. Tribological investigations were conducted using 4-Ball anti-wear (AW) and extreme pressure (EP) methods. Neat phosphonates displayed lower AW coefficients of friction and wear scar diameters than MeO. The improved AW results were attributed to the higher viscosity of the phosphonates, since the AW test is conducted in the mixed film regime. The phosphonates had no effect on EP weld point (WP) as neat oils or as 5 % additives in petroleum-based oils. In soy base oil, 5 % phosphonate additives displayed smaller improvement in WP than zinc dialkyl dithiophosphate (ZDDP). It is proposed that this lack of EP characteristics could be due to the high dissociation energy of C–P bonds in the phosphonates, compared to, for example, S–P bonds in ZDDP.
Starting Page 891
Ending Page 902
Page Count 12
File Format PDF
ISSN 0003021X
Journal Journal of the American Oil Chemists' Society
Volume Number 90
Issue Number 6
e-ISSN 15589331
Language English
Publisher Springer-Verlag
Publisher Date 2013-04-02
Publisher Place Berlin, Heidelberg
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword 4-Ball anti-wear 4-Ball extreme pressure Biodegradable oils Cloud point Density Methyl oleate PDSC Phosphonates Pour point Oxidation stability Viscosity Industrial Chemistry/Chemical Engineering Biomaterials Agriculture Food Science Biotechnology
Content Type Text
Resource Type Article
Subject Organic Chemistry Chemical Engineering
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