In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact

Research interests recently increased in studying polymer-type friction modifiers (polymer FM) consisting of a polymer backbone and a functional group because of their good friction reduction capability. However, there is no clear verification of their working mechanisms. Therefore, the polymer FM b...

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Autores principales:	Reina Goto, Ko Onodera, Takehisa Sato, Yasushi Hoshi, Hidetaka Nanao, Shigeyuki Mori
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2020
Materias:	in situ observation micro-ftir polymer friction modifiers ehl contact lubricant film film thickness adsorbed layer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f4c5bac481f24dfea79bf7f5a1b4ea7f
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spelling	oai:doaj.org-article:f4c5bac481f24dfea79bf7f5a1b4ea7f2021-11-05T09:10:33ZIn Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact1881-219810.2474/trol.15.136https://doaj.org/article/f4c5bac481f24dfea79bf7f5a1b4ea7f2020-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/15/3/15_136/_pdf/-char/enhttps://doaj.org/toc/1881-2198Research interests recently increased in studying polymer-type friction modifiers (polymer FM) consisting of a polymer backbone and a functional group because of their good friction reduction capability. However, there is no clear verification of their working mechanisms. Therefore, the polymer FM behavior at the contact region must be understood to provide mechanistic information and design further-improved polymer FMs. For this purpose, in situ observation techniques have been applied to the chemical analysis of the oil film formed from a polymer FM using a micro-Fourier transform infrared spectrometer. The experimental results indicate that the polymer concentrations at the Hertzian contact drastically increased, exceeding the bulk concentration of oil. The following new friction reduction mechanism is proposed based on the clarified polymer FM concentration: the concentrated adsorption layer of the polymer FM prevents direct contact of the surface asperities.Reina GotoKo OnoderaTakehisa SatoYasushi HoshiHidetaka NanaoShigeyuki MoriJapanese Society of Tribologistsarticlein situ observationmicro-ftirpolymerfriction modifiersehlcontactlubricant filmfilm thicknessadsorbed layerPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 15, Iss 3, Pp 136-141 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	in situ observation micro-ftir polymer friction modifiers ehl contact lubricant film film thickness adsorbed layer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	in situ observation micro-ftir polymer friction modifiers ehl contact lubricant film film thickness adsorbed layer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Reina Goto Ko Onodera Takehisa Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
description	Research interests recently increased in studying polymer-type friction modifiers (polymer FM) consisting of a polymer backbone and a functional group because of their good friction reduction capability. However, there is no clear verification of their working mechanisms. Therefore, the polymer FM behavior at the contact region must be understood to provide mechanistic information and design further-improved polymer FMs. For this purpose, in situ observation techniques have been applied to the chemical analysis of the oil film formed from a polymer FM using a micro-Fourier transform infrared spectrometer. The experimental results indicate that the polymer concentrations at the Hertzian contact drastically increased, exceeding the bulk concentration of oil. The following new friction reduction mechanism is proposed based on the clarified polymer FM concentration: the concentrated adsorption layer of the polymer FM prevents direct contact of the surface asperities.
format	article
author	Reina Goto Ko Onodera Takehisa Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori
author_facet	Reina Goto Ko Onodera Takehisa Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori
author_sort	Reina Goto
title	In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
title_short	In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
title_full	In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
title_fullStr	In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
title_full_unstemmed	In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
title_sort	in situ ftir observation of the polymer fm enrichment at the ehl contact
publisher	Japanese Society of Tribologists
publishDate	2020
url	https://doaj.org/article/f4c5bac481f24dfea79bf7f5a1b4ea7f
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In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact

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