This is admittedly a relatively minor use, but it is nonetheless a good example of the impact of surface tension when two media meet. Fishing line that is not pretreated will always float on the surface of the water, where it causes refraction and is visible to fish.
This can be explained by the spreading of a drop of water on a polymer surface. The hydrophilization achieved by Openair® plasma treatment increases surface tension on the line to > 72 mN. Wettability improves and water spreads out across the surface. As a result, the fishing line drops below the surface of the water and is almost invisible. Then it’s just a matter of time until the fish bite...
IPCM ( 7/2014)