研究目的
Analyzing the wettability behavior of micro-textures fabricated on acrylonitrile butadiene styrene (ABS) thermoplastic polymer to provide it anti-fingerprint properties.
研究成果
Micro-textures based on square pillars generated on ABS samples by ultrashort or short pulsed lasers depicts a reliable method to improve surface wettability. The key topographic parameter, for both pulse lengths, to improve water contact angle was the structure period. Different wetting behaviour of micro-textures was found for high and low surface tension liquids. Differences in colour visual perception of micro-textured surfaces was associated with topographic parameters rather than optical energy deposited on the surface.
研究不足
No significant changes in wettability concerning oleic acid (low surface tension ≈ 30mN/m) was observed. It could be explained based on the topography requirements for a Cassie-Baxter state with low surface tension liquids.
1：Experimental Design and Method Selection:
The structuring process was performed by ultrashort (picosecond) and short (nanosecond) pulses based on square pillars.
2：Sample Selection and Data Sources:
High Resistance Acrylonitrile Butadiene Styrene samples thermoplastics polymer ABS (Elix HH 3110).
3：0). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Lumera (ultrashort pulses), SpectraPhysics (nanosecond laser system), confocal microscopy (Sensofar S Neox), Scanning Electron Microscopy (SEM) (Karl Zeiss XB1540), SURTENS Universal goniometer, Datacolor 45G spectrophotometer.
4：Experimental Procedures and Operational Workflow:
Micro-patterns were fabricated on the polymer surfaces using two different pulsed lasers. The wettability response was analyzed through the static contact angle with water, oleic acid, and the contact angle hysteresis with water.
5：Data Analysis Methods:
The results show an important increase of the contact angle in all cases, especially for water, reaching a value of θW =150 ± 1.
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