Sintesis dan analisis ciri-ciri kepelinciran pelincir berasaskan ester dikarboksilat bercabang

Translated title of the contribution: Synthesis and lubricity properties analysis of branched dicarboxylate esters based lubricant

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The new dicarboxylate esters offer many of the advantages of lubrication such as high viscosity indices, good low temperature properties and good oxidative stability. In addition, they can be used as additive in lubricant to improve low temperature properties. Six branched dicarboxylate esters with different chemical structures were synthesized and tested in terms of their suitability as lubricants. The esterification reaction was carried out using a Dean Stark distillation method. Fourier transformation infra-red (FTIR); proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), and elemental analysis were used to verify the chemical structure of synthesized dicarboxylate esters. The results showed that the esters of dicarboxylate based on 2-ethyl-1-hexanol had very good low temperature properties with pour point values at -58°C for di-2-ethyhexyl dodecanedioate (D2EHD) and less than -60 °C of di-2-ethyhexyl azelate (D2EHAz) and di-2-ethyhexyl suberate (D2EHSub). The viscosity index (VI) of all dicarboxylate esters indicated high values at the range of 178 to 216. The oxidative temperature (OT) of di-2-ethybutyl dodecanedioate (D2EBD) gave the highest value at 216 °C and di-2-ethyhexyl dodecanedioate (D2EHD) showed the highest flash point value at 200 °C. The tribological study showed that all dicarboxylate esters were non-Newtonian fluids types and has showed boundary lubrication with low coefficient of friction (COF) at 40 °C and 100 °C. In general, the results indicate that all dicarboxylate esters can be used as base oil for biolubricants.

Original languageUndefined/Unknown
Pages (from-to)106-117
Number of pages12
JournalMalaysian Journal of Analytical Sciences
Volume19
Issue number1
Publication statusPublished - 2015

Fingerprint

Lubricants
Esters
Low temperature properties
Nuclear magnetic resonance
Lubrication
Viscosity
Esterification
Distillation
Protons
Oils
Carbon
Friction
Infrared radiation
Fluids
Chemical analysis
Temperature

Keywords

  • Boundary lubricant
  • Oxidative stability
  • Pour point
  • Viscosity index

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Sintesis dan analisis ciri-ciri kepelinciran pelincir berasaskan ester dikarboksilat bercabang",
abstract = "The new dicarboxylate esters offer many of the advantages of lubrication such as high viscosity indices, good low temperature properties and good oxidative stability. In addition, they can be used as additive in lubricant to improve low temperature properties. Six branched dicarboxylate esters with different chemical structures were synthesized and tested in terms of their suitability as lubricants. The esterification reaction was carried out using a Dean Stark distillation method. Fourier transformation infra-red (FTIR); proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), and elemental analysis were used to verify the chemical structure of synthesized dicarboxylate esters. The results showed that the esters of dicarboxylate based on 2-ethyl-1-hexanol had very good low temperature properties with pour point values at -58°C for di-2-ethyhexyl dodecanedioate (D2EHD) and less than -60 °C of di-2-ethyhexyl azelate (D2EHAz) and di-2-ethyhexyl suberate (D2EHSub). The viscosity index (VI) of all dicarboxylate esters indicated high values at the range of 178 to 216. The oxidative temperature (OT) of di-2-ethybutyl dodecanedioate (D2EBD) gave the highest value at 216 °C and di-2-ethyhexyl dodecanedioate (D2EHD) showed the highest flash point value at 200 °C. The tribological study showed that all dicarboxylate esters were non-Newtonian fluids types and has showed boundary lubrication with low coefficient of friction (COF) at 40 °C and 100 °C. In general, the results indicate that all dicarboxylate esters can be used as base oil for biolubricants.",
keywords = "Boundary lubricant, Oxidative stability, Pour point, Viscosity index",
author = "Ahmed, {Waled Abdo} and Yarmo, {Mohd. Ambar} and Nadia Salih and Darfizzi Derawi and Usop, {Muhammad Rahimi} and Jumat Salimon",
year = "2015",
language = "Undefined/Unknown",
volume = "19",
pages = "106--117",
journal = "Malaysian Journal of Analytical Sciences",
issn = "1394-2506",
publisher = "Faculty of Science and Technology, Universiti Kebangsaan Malaysia",
number = "1",

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TY - JOUR

T1 - Sintesis dan analisis ciri-ciri kepelinciran pelincir berasaskan ester dikarboksilat bercabang

AU - Ahmed, Waled Abdo

AU - Yarmo, Mohd. Ambar

AU - Salih, Nadia

AU - Derawi, Darfizzi

AU - Usop, Muhammad Rahimi

AU - Salimon, Jumat

PY - 2015

Y1 - 2015

N2 - The new dicarboxylate esters offer many of the advantages of lubrication such as high viscosity indices, good low temperature properties and good oxidative stability. In addition, they can be used as additive in lubricant to improve low temperature properties. Six branched dicarboxylate esters with different chemical structures were synthesized and tested in terms of their suitability as lubricants. The esterification reaction was carried out using a Dean Stark distillation method. Fourier transformation infra-red (FTIR); proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), and elemental analysis were used to verify the chemical structure of synthesized dicarboxylate esters. The results showed that the esters of dicarboxylate based on 2-ethyl-1-hexanol had very good low temperature properties with pour point values at -58°C for di-2-ethyhexyl dodecanedioate (D2EHD) and less than -60 °C of di-2-ethyhexyl azelate (D2EHAz) and di-2-ethyhexyl suberate (D2EHSub). The viscosity index (VI) of all dicarboxylate esters indicated high values at the range of 178 to 216. The oxidative temperature (OT) of di-2-ethybutyl dodecanedioate (D2EBD) gave the highest value at 216 °C and di-2-ethyhexyl dodecanedioate (D2EHD) showed the highest flash point value at 200 °C. The tribological study showed that all dicarboxylate esters were non-Newtonian fluids types and has showed boundary lubrication with low coefficient of friction (COF) at 40 °C and 100 °C. In general, the results indicate that all dicarboxylate esters can be used as base oil for biolubricants.

AB - The new dicarboxylate esters offer many of the advantages of lubrication such as high viscosity indices, good low temperature properties and good oxidative stability. In addition, they can be used as additive in lubricant to improve low temperature properties. Six branched dicarboxylate esters with different chemical structures were synthesized and tested in terms of their suitability as lubricants. The esterification reaction was carried out using a Dean Stark distillation method. Fourier transformation infra-red (FTIR); proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), and elemental analysis were used to verify the chemical structure of synthesized dicarboxylate esters. The results showed that the esters of dicarboxylate based on 2-ethyl-1-hexanol had very good low temperature properties with pour point values at -58°C for di-2-ethyhexyl dodecanedioate (D2EHD) and less than -60 °C of di-2-ethyhexyl azelate (D2EHAz) and di-2-ethyhexyl suberate (D2EHSub). The viscosity index (VI) of all dicarboxylate esters indicated high values at the range of 178 to 216. The oxidative temperature (OT) of di-2-ethybutyl dodecanedioate (D2EBD) gave the highest value at 216 °C and di-2-ethyhexyl dodecanedioate (D2EHD) showed the highest flash point value at 200 °C. The tribological study showed that all dicarboxylate esters were non-Newtonian fluids types and has showed boundary lubrication with low coefficient of friction (COF) at 40 °C and 100 °C. In general, the results indicate that all dicarboxylate esters can be used as base oil for biolubricants.

KW - Boundary lubricant

KW - Oxidative stability

KW - Pour point

KW - Viscosity index

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M3 - Article

VL - 19

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EP - 117

JO - Malaysian Journal of Analytical Sciences

JF - Malaysian Journal of Analytical Sciences

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