Wetting is the ability of a liquid droplet to spread over a surface. Wetting agents are also known as surfactants – surface active agents.
Wetting agents are substances that reduce the surface tension of water to allow it to spread droplets onto a surface, increasing the abilities of a liquid. Lowering the surface tension lowers the energy required to spread droplets onto a film, thus weakening the cohesive properties of the liquid and strengthening its adhesive properties, increasing its penetrating, and spreading qualities through previously water repellent surfaces. Read More