I'd like to have a PDMS similar to Sylgard 184 from Dow Corning, but I need the density to be less than water. I've tried with above product and after it's cured, it floats on water due surface tension, but will sink if subme rged. The data sheet from Dow Corning also said that Sylgard 184 has specif ic gravity of around 1.03.
Anybody know any commercial PDMS? Or probably is there any pretty easy way to make Sylgard 184 less dense than water?