[jaka]

Hello

My name is Jaka and I'm not a chemist (i am physicist) so I would ask for help. I want to make superhydrophobic coating. I bought trimethylhydroxysilane, then applied with brush to the surface (pvc, glass, ...). There is no effect? No reaction with silica on glass? I wonder how to achive superhydrophobic coating with trimethylhydroxysilane. What else do I need. Is it even possible?

Thank you for answers

Jaka

[Arkcon]

According to Wikipedia, superhydrophobic coatings are the result of nanostructures or microstructures or a combination of the two:  http://en.wikipedia.org/wiki/Superhydrophobe#Unitary_versus_hierarchical_roughness_structures  You've purchases a very common glass treatment chemical -- you haven't built a structure.

[llabrword]

The most efficient superhydrophobic surfaces are fabricated using longer chain alkylsilanes, preferably with 3 good leaving groups (chloro, methoxy, etc.).  In addition to this, having a nanostructure is also important to achieve higher contact angles.