Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters

Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd. Ambar Yarmo, Darfizzi Derawi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Synthesis of new lubricants nowadays is increasing to improve the lubricity properties and the quality of lubricant. In the current study, eight diesters with different chemical structures were tested in terms of their suitability as lubricants. The esterification reaction was carried out using Dean-Stark distillation method with some modification. Fourier transformation infra-red (FTIR), proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), were used to verify the chemical structure of the diesters. The results showed that the dioleyl pimelate (DOlP), dioleyl adipate (DOlA), dioleyl glutarate (DOlG), and dioleyl succinate (DOlSuc) showed good low temperature properties with pour point values at -10, -12, -16 and -20°C, respectively. The dioleyl dodecanedioate (DOlD) indicated remarkable flash point value at 305°C and had slightly high oxidative stability temperature (OT) at 183°C. The flash point increased with the number of carbons for dicarboxylic acid used, while oxidative stability was affected by the unsaturated of oleyl alcohol. Tribological study showed that the diesters were non-Newtonian except DOlD, which was Newtonian fluid. All the diesters were found to be boundary lubricants with low coefficients of friction (COF). Overall, the results indicated that all the diesters studied can be used as lubricating base oils.

Original languageEnglish
Pages (from-to)405-412
Number of pages8
JournalSains Malaysiana
Volume44
Issue number3
DOIs
Publication statusPublished - 1 Mar 2015

Fingerprint

dicarboxylic acids
lubricants
esters
oxidative stability
chemical structure
pour point
carbon
esterification
succinic acid
distillation
friction
protons
nuclear magnetic resonance spectroscopy
temperature
oils
synthesis
oleyl alcohols

Keywords

  • Coefficients of friction
  • Flash point
  • Oxidative stability
  • Pour point
  • Tribological properties

ASJC Scopus subject areas

  • General

Cite this

Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters. / Salimon, Jumat; Ahmed, Waled Abdo; Salih, Nadia; Yarmo, Mohd. Ambar; Derawi, Darfizzi.

In: Sains Malaysiana, Vol. 44, No. 3, 01.03.2015, p. 405-412.

Research output: Contribution to journalArticle

@article{42a3645d9fb04cf2afc2b715dd96d561,
title = "Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters",
abstract = "Synthesis of new lubricants nowadays is increasing to improve the lubricity properties and the quality of lubricant. In the current study, eight diesters with different chemical structures were tested in terms of their suitability as lubricants. The esterification reaction was carried out using Dean-Stark distillation method with some modification. Fourier transformation infra-red (FTIR), proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), were used to verify the chemical structure of the diesters. The results showed that the dioleyl pimelate (DOlP), dioleyl adipate (DOlA), dioleyl glutarate (DOlG), and dioleyl succinate (DOlSuc) showed good low temperature properties with pour point values at -10, -12, -16 and -20°C, respectively. The dioleyl dodecanedioate (DOlD) indicated remarkable flash point value at 305°C and had slightly high oxidative stability temperature (OT) at 183°C. The flash point increased with the number of carbons for dicarboxylic acid used, while oxidative stability was affected by the unsaturated of oleyl alcohol. Tribological study showed that the diesters were non-Newtonian except DOlD, which was Newtonian fluid. All the diesters were found to be boundary lubricants with low coefficients of friction (COF). Overall, the results indicated that all the diesters studied can be used as lubricating base oils.",
keywords = "Coefficients of friction, Flash point, Oxidative stability, Pour point, Tribological properties",
author = "Jumat Salimon and Ahmed, {Waled Abdo} and Nadia Salih and Yarmo, {Mohd. Ambar} and Darfizzi Derawi",
year = "2015",
month = "3",
day = "1",
doi = "10.17576/jsm-2015-4403-12",
language = "English",
volume = "44",
pages = "405--412",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
number = "3",

}

TY - JOUR

T1 - Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters

AU - Salimon, Jumat

AU - Ahmed, Waled Abdo

AU - Salih, Nadia

AU - Yarmo, Mohd. Ambar

AU - Derawi, Darfizzi

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Synthesis of new lubricants nowadays is increasing to improve the lubricity properties and the quality of lubricant. In the current study, eight diesters with different chemical structures were tested in terms of their suitability as lubricants. The esterification reaction was carried out using Dean-Stark distillation method with some modification. Fourier transformation infra-red (FTIR), proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), were used to verify the chemical structure of the diesters. The results showed that the dioleyl pimelate (DOlP), dioleyl adipate (DOlA), dioleyl glutarate (DOlG), and dioleyl succinate (DOlSuc) showed good low temperature properties with pour point values at -10, -12, -16 and -20°C, respectively. The dioleyl dodecanedioate (DOlD) indicated remarkable flash point value at 305°C and had slightly high oxidative stability temperature (OT) at 183°C. The flash point increased with the number of carbons for dicarboxylic acid used, while oxidative stability was affected by the unsaturated of oleyl alcohol. Tribological study showed that the diesters were non-Newtonian except DOlD, which was Newtonian fluid. All the diesters were found to be boundary lubricants with low coefficients of friction (COF). Overall, the results indicated that all the diesters studied can be used as lubricating base oils.

AB - Synthesis of new lubricants nowadays is increasing to improve the lubricity properties and the quality of lubricant. In the current study, eight diesters with different chemical structures were tested in terms of their suitability as lubricants. The esterification reaction was carried out using Dean-Stark distillation method with some modification. Fourier transformation infra-red (FTIR), proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), were used to verify the chemical structure of the diesters. The results showed that the dioleyl pimelate (DOlP), dioleyl adipate (DOlA), dioleyl glutarate (DOlG), and dioleyl succinate (DOlSuc) showed good low temperature properties with pour point values at -10, -12, -16 and -20°C, respectively. The dioleyl dodecanedioate (DOlD) indicated remarkable flash point value at 305°C and had slightly high oxidative stability temperature (OT) at 183°C. The flash point increased with the number of carbons for dicarboxylic acid used, while oxidative stability was affected by the unsaturated of oleyl alcohol. Tribological study showed that the diesters were non-Newtonian except DOlD, which was Newtonian fluid. All the diesters were found to be boundary lubricants with low coefficients of friction (COF). Overall, the results indicated that all the diesters studied can be used as lubricating base oils.

KW - Coefficients of friction

KW - Flash point

KW - Oxidative stability

KW - Pour point

KW - Tribological properties

UR - http://www.scopus.com/inward/record.url?scp=84983434995&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983434995&partnerID=8YFLogxK

U2 - 10.17576/jsm-2015-4403-12

DO - 10.17576/jsm-2015-4403-12

M3 - Article

VL - 44

SP - 405

EP - 412

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 3

ER -