Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers

The interfacial properties of perfluoropolyether (PFPE) films having the [(CF2)nO] main chain with n = 1.5, 3 and 4, were systematically compared on carbon surfaces. The monolayer thickness decreases with increasing n, indicating that stiffer chains (larger n) lie flatter on the surface. The surface...

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Autores principales:	Robert Waltman, Connie Wiita
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2015
Materias:	perfluoropolyether disk lubricant surface energy spin-stand test 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/768db51a4316438c854388cf4ae4256b
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spelling	oai:doaj.org-article:768db51a4316438c854388cf4ae4256b2021-11-05T09:22:20ZMain Chain Effects in Tetraol-Functionalized Perfluoropolyethers1881-219810.2474/trol.10.262https://doaj.org/article/768db51a4316438c854388cf4ae4256b2015-08-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/10/4/10_262/_pdf/-char/enhttps://doaj.org/toc/1881-2198The interfacial properties of perfluoropolyether (PFPE) films having the [(CF2)nO] main chain with n = 1.5, 3 and 4, were systematically compared on carbon surfaces. The monolayer thickness decreases with increasing n, indicating that stiffer chains (larger n) lie flatter on the surface. The surface energy-derived disjoining pressure also increased with increasing n. Spin-stand tribological experiments indicated that clearance (slider-disk spacing) increased and PFPE lubricant pick-up decreased with increasing disjoining pressure and main chain stiffness. Slider wear rate increased with decreasing PFPE coverage and increasing main chain stiffness. Structure-property correlations are developed and discussed.Robert WaltmanConnie WiitaJapanese Society of Tribologistsarticleperfluoropolyetherdisk lubricantsurface energyspin-stand testPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 10, Iss 4, Pp 262-272 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	perfluoropolyether disk lubricant surface energy spin-stand test Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	perfluoropolyether disk lubricant surface energy spin-stand test Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Robert Waltman Connie Wiita Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
description	The interfacial properties of perfluoropolyether (PFPE) films having the [(CF2)nO] main chain with n = 1.5, 3 and 4, were systematically compared on carbon surfaces. The monolayer thickness decreases with increasing n, indicating that stiffer chains (larger n) lie flatter on the surface. The surface energy-derived disjoining pressure also increased with increasing n. Spin-stand tribological experiments indicated that clearance (slider-disk spacing) increased and PFPE lubricant pick-up decreased with increasing disjoining pressure and main chain stiffness. Slider wear rate increased with decreasing PFPE coverage and increasing main chain stiffness. Structure-property correlations are developed and discussed.
format	article
author	Robert Waltman Connie Wiita
author_facet	Robert Waltman Connie Wiita
author_sort	Robert Waltman
title	Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
title_short	Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
title_full	Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
title_fullStr	Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
title_full_unstemmed	Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers
title_sort	main chain effects in tetraol-functionalized perfluoropolyethers
publisher	Japanese Society of Tribologists
publishDate	2015
url	https://doaj.org/article/768db51a4316438c854388cf4ae4256b
work_keys_str_mv	AT robertwaltman mainchaineffectsintetraolfunctionalizedperfluoropolyethers AT conniewiita mainchaineffectsintetraolfunctionalizedperfluoropolyethers
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Main Chain Effects in Tetraol-Functionalized Perfluoropolyethers

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