Project

Friction Meets Chemistry: Tribochemical Interactions between Surfaces

(Completed Project)

Groups:

People:

Project Duration:

Start Date: October 1st, 2012
Completion Date: October 31st, 2014
 

Summary:

In this project, the tribochemical interaction between polytetrafluoroethylene (PTFE) and silicon oxide has been investigated in detail by the utilization of a custom-designed rig aimed to bring about a gradually increasing contact force (and friction) between the two material surfaces. Results have revealed that PTFE transfer onto silicon oxide can be realized at apparent contact pressures as low as 5 kPa, much lower than reported previously. Additionally, a positive correlation between contact pressure and amount of PTFE transfer was observed and PTFE features imparted onto the silicon oxide surface proved resistant to several ultrasonic washing cycles involving various solvents. Finally, the hydrophobicity of the silicon oxide surface has been dramatically increased by the application of dense PTFE features onto the surface via the method introduced above.

All activities within this research project have been conducted in close collaboration with the group of Prof. Şefik Süzer at Bilkent University, Chemistry Department.

Related Publications:

    Journal Papers

  • Ucar, A., Copuroglu, M., Baykara, M.Z., Arikan, O., Suzer, S. (2014). "Tribological Interaction between Polytetrafluoroethylene and Silicon Oxide Surfaces", Journal of Chemical Physics, v.141 p.164702
    DOI: 10.1063/1.4898384

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