Lubrication characteristics of wax esters from oils produced by a genetically-enhanced oilseed crop

Asghar Shirani, Tasha Joy, Ida Lager, Jenny Lindberg Yilmaz, Hong Lei Wang, Simon Jeppson, Edgar B. Cahoon, Kent Chapman, Sten Stymne, Diana Berman

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

In this study, purified by a newly developed method Crambe (Crambe abyssinica) oil wax esters were mixed with conventional Crambe oil to examine the lubrication characteristics of bio-based wax esters and their blends. The Quartz Crystal Microbalance (QCM) results indicate high thermal stability of wax esters and their mixtures which is further supported by observed small viscosity change with temperature increase. Fourier transform infrared spectroscopy (FTIR) analysis suggested that chemical modifications induced by heating of the Crambe oil with 15 wt% of wax esters are dominated by the stability of wax esters. Tribology tests revealed that adding 15 wt% wax esters facilitates the noticeable friction reduction and lowers the wear produced in the sliding contact at elevated temperatures.

Original languageEnglish (US)
Article number106234
JournalTribology International
Volume146
DOIs
StatePublished - Jun 2020

Keywords

  • Bio-based lubricants
  • Friction
  • Quartz crystal microbalance
  • Wax esters

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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    Shirani, A., Joy, T., Lager, I., Yilmaz, J. L., Wang, H. L., Jeppson, S., Cahoon, E. B., Chapman, K., Stymne, S., & Berman, D. (2020). Lubrication characteristics of wax esters from oils produced by a genetically-enhanced oilseed crop. Tribology International, 146, [106234]. https://doi.org/10.1016/j.triboint.2020.106234