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

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...

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Main Authors:	Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd Ambar Yarmo, Darfizzi Derawi
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/8483/ http://journalarticle.ukm.my/8483/ http://journalarticle.ukm.my/8483/1/12_Jumat_Salimon.pdf

id	ukm-8483
recordtype	eprints
spelling	ukm-84832016-12-14T06:47:18Z http://journalarticle.ukm.my/8483/ Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd Ambar Yarmo, Darfizzi Derawi, 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. Universiti Kebangsaan Malaysia 2015-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/8483/1/12_Jumat_Salimon.pdf Jumat Salimon, and Waled Abdo Ahmed, and Nadia Salih, and Mohd Ambar Yarmo, and Darfizzi Derawi, (2015) Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters. Sains Malaysiana, 44 (3). pp. 405-412. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	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.
format	Article
author	Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd Ambar Yarmo, Darfizzi Derawi,
spellingShingle	Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd Ambar Yarmo, Darfizzi Derawi, Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
author_facet	Jumat Salimon, Waled Abdo Ahmed, Nadia Salih, Mohd Ambar Yarmo, Darfizzi Derawi,
author_sort	Jumat Salimon,
title	Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
title_short	Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
title_full	Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
title_fullStr	Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
title_full_unstemmed	Lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
title_sort	lubricity and tribological properties of dicarboxylic acid and oleyl alcohol based esters
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/8483/ http://journalarticle.ukm.my/8483/ http://journalarticle.ukm.my/8483/1/12_Jumat_Salimon.pdf
first_indexed	2023-09-18T19:52:25Z
last_indexed	2023-09-18T19:52:25Z
_version_	1777406307495575552

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

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