A wetting experiment as a tool to study the physicochemical processes accompanying the contact of hydrophobic and superhydrophobic materials with aqueous media

► Hydrophobic agent from coating undergoes hydrolysis and desorption in contact with water. ► Hydrophobicity degrades due to formation of water adsorption layers on the coating. ► Hydrophobicity degrades due to desorption of hydrophobic agent from the interface. ► Portion of wetted area in heterogeneous wetting regime can be defined in sessile drop method.