Effect of polyethylene glycol modification and microstructure on the wettability and friction characteristics

抄録

This paper discusses a surface functionalization by the combination of surface modification with hydrophilic material and texturing. Modification of a silicon substrate with polyethylene glycol (PEG) is introduced first. Then, it was confirmed that PEG modified surface had stable oleophobic property in water for long time which can be applicable to self-cleaning characteristics. It was also found that array of micro-pillars well enhance the functionality. Lubrication function is also expected. Changing the normal load and sliding speed, coefficient of friction against steel ball (φ5 mm) was measured. It was found that good lubrication performance (μ 0.1) was observed under the condition of low contact pressure and low sliding speed.