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Coconut Oil as Bio Lubricant: Study of the Anti-Wear Properties Using Quantum Chemical Calculations and Tribological Tests

[+] Author Affiliations
N. H. Jayadas

CUSAT, Cochin, India

K. Prabhakaran Nair

NITC, Calicut, India

Paper No. WTC2005-63786, pp. 513-514; 2 pages
doi:10.1115/WTC2005-63786
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 1
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4201-0 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

In this paper Spartan 02, a molecular dynamics software is used to analyze and predict the tribological properties of coconut oil in a qualitative manner on the basis of carbon chain length of the constituent fatty acids, their polarity (Net electrostatic charge, Qr ) and the energies of the molecular orbitals EHOMO (Energy of the Highest Occupied Molecular Orbital) and ELUMO (Energy of the Lowest Unoccupied Molecular Orbital) and the enthalpies of formations (Hform ) of the iron soaps of respective fatty acids. Tribological properties of the constituent fatty acids of coconut oil were evaluated using a four-ball tester as per ASTM D4172 method. The experimental results showed good correlation to the selected quantum chemical descriptors. The influence of an anti-wear additive on the tribological performance of coconut oil and the optimum additive concentration were also evaluated experimentally.

Copyright © 2005 by ASME
Topics: Tribology , Wear , Lubricants

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