Trisiloxane surfactants can not only reduce the interfacial tension of the oil/water interface, but also may wet and expand on low-energy hydrophobic surfaces. This ability is called "super wettability" or "super spreadability". This phenomenon is believed to be the presence of special surfactant aggregates in the solution.

The reason why polydimethylsiloxane chains are easy to spread on polar surfaces (such as water, metals, fibers, etc.) is that the oxygen in the silicon-oxygen chain can form oxygen bonds with polar molecules or atomic groups, increasing the silicon-oxygen chain and polar surfaces. The force between the surface molecules promotes its spreading into a monolayer, so that the hydrophobic siloxane lies on the polar surface, forming a unique "stretched chain" configuration, while the hydrophobicity of common surfactants The base is upright on the polar surface. When the methyl group in the polysiloxane is replaced by other groups (such as large alkyl groups, alicyclic groups, aryl groups, silicon functional groups or carbon functional groups), it is bound to change the polarity or steric hindrance of the substituents. It will affect the hydrophobicity of polysiloxane and its spreading speed and state on polar surfaces. The number and distribution of substituents on the silicon-oxygen chain will also have the same effect. For example, the substitution of a methyl group with a larger alkyl group or an aryl group will significantly reduce the spreading ability of the polysiloxane and at the same time reduce its orientation ability on the polar surface.