Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11249-011-9895-2
Title: Ultrathin PFPE film systems fabricated by covalent assembly: An application to tribology
Authors: Gupta, R.K.
Panjwani, B. 
Satyanarayana, N. 
Sinha, S.K. 
Srinivasan, M.P. 
Keywords: Covalent molecular assembly
PFPE films
Self assembled monolayers
Tribology
Ultrathin films
Issue Date: Feb-2012
Source: Gupta, R.K., Panjwani, B., Satyanarayana, N., Sinha, S.K., Srinivasan, M.P. (2012-02). Ultrathin PFPE film systems fabricated by covalent assembly: An application to tribology. Tribology Letters 45 (2) : 371-378. ScholarBank@NUS Repository. https://doi.org/10.1007/s11249-011-9895-2
Abstract: In this study, we have employed covalent molecular assembly to fabricate robust thin film structures comprising molecular layers and have demonstrated its application in tribology. An anhydride-functionalized polymer (gantrez) was deposited over an amine-functionalized silicon surface through covalent binding and employed as an intermediate layer between derivatized silicon and perfluoropolyether (PFPE). X-ray photoelectron spectroscopy, atomic force microscopy, and ellipsometry were employed to study the interfacial chemistry, morphology, and thickness of the assembled films. The films show excellent stability and strength against sonication, which can be attributed to the covalent interlayer linkage. Such films showed wear life of >100,000 cycles in ball-ondisk sliding tests at a normal load of 0.5 N and a sliding rotation of 200 rpm at a track radius of 3.2 mm. The performance was superior compared to that of PFPE-coated self assembled monolayers used as the lubricating layer. The film systems and assembly technique can be employed as nano-lubrication in several technological applications, such as information storage devices and micro-electromechanical systems. © 2011 Springer Science+Business Media, LLC.
Source Title: Tribology Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/61643
ISSN: 10238883
DOI: 10.1007/s11249-011-9895-2
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

4
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

3
checked on Nov 14, 2017

Page view(s)

38
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.