Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents

Concentrated polymer brushes (CPBs) are a class of thin polymer films that are composed of polymer chains densely grafted to substrate surfaces. Due to their excellent tribological performance derived from the highly stretched conformation of the polymer chains in suitable solvents, CPBs are expecte...

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Autores principales:	Hikaru Okubo, Chiharu Tadokoro, Keita Sakakibara, Ken Nakano, Shinya Sasaki, Yoshinobu Tsujii
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2019
Materias:	concentrated polymer brush super-low friction boundary lubrication cpb raman coating 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/49298ac80c73436e8ee623a5b221ec6d
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spelling	oai:doaj.org-article:49298ac80c73436e8ee623a5b221ec6d2021-11-05T09:17:38ZSuper-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents1881-219810.2474/trol.14.226https://doaj.org/article/49298ac80c73436e8ee623a5b221ec6d2019-11-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/14/4/14_226/_pdf/-char/enhttps://doaj.org/toc/1881-2198Concentrated polymer brushes (CPBs) are a class of thin polymer films that are composed of polymer chains densely grafted to substrate surfaces. Due to their excellent tribological performance derived from the highly stretched conformation of the polymer chains in suitable solvents, CPBs are expected to be applicable as tribological coatings in sliding components. However, a long swelling time is required to obtain fully swelled CPBs in solvents. To overcome this issue, we propose a simple method involving thermal treatment of CPBs in solvents. Our results showed that this method can dramatically reduce the swelling time of CPBs from more than 48 h to less than 3 min. Moreover, thermal-treatment-CPBs (TT-CPBs) can provide an extremely low friction coefficient (0.002) under the boundary lubrication regime at the TT-CPB/steel tribo-pair interface. All our results suggest that the thermal treatment method is a practical method that will allow the industrial application of CPBs.Hikaru OkuboChiharu TadokoroKeita SakakibaraKen NakanoShinya SasakiYoshinobu TsujiiJapanese Society of Tribologistsarticleconcentrated polymer brushsuper-low frictionboundary lubricationcpbramancoatingPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 14, Iss 4, Pp 226-236 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	concentrated polymer brush super-low friction boundary lubrication cpb raman coating Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	concentrated polymer brush super-low friction boundary lubrication cpb raman coating Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Hikaru Okubo Chiharu Tadokoro Keita Sakakibara Ken Nakano Shinya Sasaki Yoshinobu Tsujii Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
description	Concentrated polymer brushes (CPBs) are a class of thin polymer films that are composed of polymer chains densely grafted to substrate surfaces. Due to their excellent tribological performance derived from the highly stretched conformation of the polymer chains in suitable solvents, CPBs are expected to be applicable as tribological coatings in sliding components. However, a long swelling time is required to obtain fully swelled CPBs in solvents. To overcome this issue, we propose a simple method involving thermal treatment of CPBs in solvents. Our results showed that this method can dramatically reduce the swelling time of CPBs from more than 48 h to less than 3 min. Moreover, thermal-treatment-CPBs (TT-CPBs) can provide an extremely low friction coefficient (0.002) under the boundary lubrication regime at the TT-CPB/steel tribo-pair interface. All our results suggest that the thermal treatment method is a practical method that will allow the industrial application of CPBs.
format	article
author	Hikaru Okubo Chiharu Tadokoro Keita Sakakibara Ken Nakano Shinya Sasaki Yoshinobu Tsujii
author_facet	Hikaru Okubo Chiharu Tadokoro Keita Sakakibara Ken Nakano Shinya Sasaki Yoshinobu Tsujii
author_sort	Hikaru Okubo
title	Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
title_short	Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
title_full	Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
title_fullStr	Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
title_full_unstemmed	Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents
title_sort	super-low friction of thermal-treatment-concentrated polymer brushes (tt-cpbs) under boundary lubrication: a practical method to shorten the swelling time of cpbs in solvents
publisher	Japanese Society of Tribologists
publishDate	2019
url	https://doaj.org/article/49298ac80c73436e8ee623a5b221ec6d
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Super-Low Friction of Thermal-Treatment-Concentrated Polymer Brushes (TT-CPBs) under Boundary Lubrication: A Practical Method to Shorten the Swelling Time of CPBs in Solvents

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