Watson, S;
Dennington, S;
Wang, L;
Nie, M;
Hinder, S;
Stokes, K;
(2017)
Polymer brush lubrication of the silicon nitride-steel contact: a colloidal force microscopy study.
RSC Advances
, 7
(68)
pp. 42667-42676.
10.1039/c7ra08897c.
Preview |
Text
c7ra08897c.pdf - Accepted Version Download (846kB) | Preview |
Abstract
A greener lubrication solution for the steel–silicon nitride hybrid contact is proposed. The utilisation of surface-initiated (SI) activators-regenerated-by-electron-transfer (ARGET) atom-transfer radical polymerisation (ATRP) is employed to produce an oleophilic polymer brush which is based on methyl methacrylate. The current study presents the synthesis and characterisation of poly methyl methacrylate brushes. X-ray photoelectron spectroscopy, contact angle, gel permeation chromatography and atomic force microscopy were used to characterise the initiators and brushes. The lubricating effects of the polymer brushes under dry and swollen states were elucidated by lateral force microscopy with a steel colloid with a normal load in the nanoscale range. By testing in water and in poly α-olefin (PAO) this work shows that the frictional response of surface initiated polymers is highly dependent on the interaction between polymer brushes and fluid.
| Type: | Article |
|---|---|
| Title: | Polymer brush lubrication of the silicon nitride-steel contact: a colloidal force microscopy study |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c7ra08897c |
| Publisher version: | http://dx.doi.org/10.1039/c7ra08897c |
| Language: | English |
| Additional information: | Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (https://creativecommons.org/licenses/by/3.0/) |
| Keywords: | Science & Technology, Physical Sciences, Chemistry, Multidisciplinary, Chemistry, TRANSFER RADICAL POLYMERIZATION, SURFACE INTERACTION FORCES, SELF-ASSEMBLED MONOLAYERS, FRICTION, ADHESION, DENSITY, COATINGS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10048198 |
Archive Staff Only
 |
View Item |
