Adhesion and tribological property of Cu nanoparticles-doped hydrophobic polyelectrolyte multilayers
Article first published online: 18 JUN 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 24, Issue 7, pages 313–323, November 2012
How to Cite
Yang, G., Chen, X., Zhang, Z., Song, S., Yu, L. and Zhang, P. (2012), Adhesion and tribological property of Cu nanoparticles-doped hydrophobic polyelectrolyte multilayers. Lubrication Science, 24: 313–323. doi: 10.1002/ls.1190
- Issue published online: 11 OCT 2012
- Article first published online: 18 JUN 2012
- Manuscript Revised: 29 MAR 2012
- Manuscript Accepted: 29 MAR 2012
- Manuscript Received: 22 FEB 2012
- National Natural Science Foundation of China. Grant Numbers: 50975077, 51005070
- polyelectrolyte multilayers;
- hydrophobic surface;
- tribological property;
Hydrophobic polyelectrolyte multilayers (PEMs) doped with Cu nanoparticles and modified with fluoroalkylsilane were prepared by a series of reaction cycles, where the polyelectrolyte multilayers were constructed by alternate pipetting of the solutions of poly(diallyldimethylammonium chloride) and poly(sodium 4-styrene sulfonate) onto a spinning substrate (quartz slide or silicon wafer), and resultant PEMs-coated substrate was immersed in Cu2+ and NaBH4 solutions to allow nucleation of Cu nanoparticles. The relationship between the water wettability and tribological behavior of the as-prepared hydrophobic PEMs was studied. Results show that the wettability of the hydrophobic PEMs can be controlled by properly adjusting the reaction cycle. The adhesion and tribological behavior of the Cu nanoparticles-doped hydrophobic PEMs, excluding the one obtained at 12 reaction cycles, are closely related to their wettability. That is, the PEM film with stronger hydrophobicity has a lower surface energy, showing a lower friction and longer anti-wear life. Copyright © 2012 John Wiley & Sons, Ltd.