MoDTC friction modifier additive degradation: Correlation between tribological performance and chemical changes

Due to the complexity of the processes, the degradation mechanisms of molybdenum dithiocarbamate (MoDTC)-containing oil are still not fully understood. In order to get a better understanding of how a MoDTC additive works at the molecular level, correlation between its chemical behaviour in a bulk oi...

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Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (114), p.93786-93796
Main Authors: De Feo, M, Minfray, C, De Barros Bouchet, M. I, Thiebaut, B, Martin, J. M
Format: Article
Language:English
Subjects:
Additives
Analytical chemistry
Chemical Sciences
Correlation
Degradation
Engineering Sciences
Fourier transforms
Friction
High performance liquid chromatography
Infrared spectroscopy
Material chemistry
Mechanics
Mechanics of materials
Tribology
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Summary:Due to the complexity of the processes, the degradation mechanisms of molybdenum dithiocarbamate (MoDTC)-containing oil are still not fully understood. In order to get a better understanding of how a MoDTC additive works at the molecular level, correlation between its chemical behaviour in a bulk oil during thermo-oxidative degradation and its ability to reduce friction has been investigated. The combination of High-Performance Liquid Chromatography (HPLC), Fourier Transform Infrared Spectroscopy (FT-IR) and Mass Spectroscopy (MS) techniques has provided much detailed information about the complex chemistry involved in the degradation process. Finally, the relationship between MoDTC additive depletion and its effectiveness in decreasing friction has been studied and a hypothesis on the chemical pathway followed by MoDTC during a thermo-oxidative degradation process has been proposed. To get a better understanding of how the MoDTC additive works at the molecular level, correlation between its chemical behaviour in a bulk oil during thermo-oxidative degradation and its ability to reduce friction has been investigated.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra15250j