Spectroscopic analysis of synthetic lubricating oil

Analysis and evaluation of the degradation rate of the synthetic lubricating oil in diesel vehicle engines under the operating effect were carried out by exploiting: Electron Paramagnetic Resonance (EPR) and Infrared Fourier Transform (FTIR). EPR measurements of the degraded samples reveal that the...

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Published in:	Tribology international Vol. 114; pp. 27 - 32
Main Authors:	Zzeyani, S., Mikou, M., Naja, J., Elachhab, A.
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier Ltd 01-10-2017 Elsevier BV
Subjects:	Degradation Diesel engines Electron paramagnetic resonance Fourier transforms Free radicals Infrared spectroscopy Lubricating oil Lubricating oil analysis Lubricating oils Lubrication Organic compounds Quality control Spectrum analysis Lubricating oil Degradation Free radicals Quality control
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Abstract	Analysis and evaluation of the degradation rate of the synthetic lubricating oil in diesel vehicle engines under the operating effect were carried out by exploiting: Electron Paramagnetic Resonance (EPR) and Infrared Fourier Transform (FTIR). EPR measurements of the degraded samples reveal that the spectra shape depends on the nature of the used oil and stable free radicals that are produced. Almost a linear correlation between the concentration of these radicals and the degradation rate, expressed in the number of kilometers traveled by vehicle, is observed. The results of FTIR measurements revealed the production of organic compounds from degradation. Both EPR and FTIR techniques seem to be effective for analyzing the quality of the lubricating oil and the evaluation of its rate of degradation. •EPR is efficient technique to analyze quality and evaluate the degradation rate of lubricating oils.•The degradation of lubricating oils has shown the creation of free radicals.•The concentration of free radicals depends on the quality of the lubricating oil.•FTIR is method to highlight the evolution of specific molecular fragments as result of degradation.•Using the anti-radical ecological additives based the vegetal oils to improve the quality and lubricant resistance.
AbstractList	Analysis and evaluation of the degradation rate of the synthetic lubricating oil in diesel vehicle engines under the operating effect were carried out by exploiting: Electron Paramagnetic Resonance (EPR) and Infrared Fourier Transform (FTIR). EPR measurements of the degraded samples reveal that the spectra shape depends on the nature of the used oil and stable free radicals that are produced. Almost a linear correlation between the concentration of these radicals and the degradation rate, expressed in the number of kilometers traveled by vehicle, is observed. The results of FTIR measurements revealed the production of organic compounds from degradation. Both EPR and FTIR techniques seem to be effective for analyzing the quality of the lubricating oil and the evaluation of its rate of degradation. Analysis and evaluation of the degradation rate of the synthetic lubricating oil in diesel vehicle engines under the operating effect were carried out by exploiting: Electron Paramagnetic Resonance (EPR) and Infrared Fourier Transform (FTIR). EPR measurements of the degraded samples reveal that the spectra shape depends on the nature of the used oil and stable free radicals that are produced. Almost a linear correlation between the concentration of these radicals and the degradation rate, expressed in the number of kilometers traveled by vehicle, is observed. The results of FTIR measurements revealed the production of organic compounds from degradation. Both EPR and FTIR techniques seem to be effective for analyzing the quality of the lubricating oil and the evaluation of its rate of degradation. •EPR is efficient technique to analyze quality and evaluate the degradation rate of lubricating oils.•The degradation of lubricating oils has shown the creation of free radicals.•The concentration of free radicals depends on the quality of the lubricating oil.•FTIR is method to highlight the evolution of specific molecular fragments as result of degradation.•Using the anti-radical ecological additives based the vegetal oils to improve the quality and lubricant resistance.
Author	Mikou, M. Elachhab, A. Zzeyani, S. Naja, J.
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SubjectTerms	Degradation Diesel engines Electron paramagnetic resonance Fourier transforms Free radicals Infrared spectroscopy Lubricating oil Lubricating oil analysis Lubricating oils Lubrication Organic compounds Quality control Spectrum analysis
Title	Spectroscopic analysis of synthetic lubricating oil
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