Regenerative superhydrophobic coating from microcapsules

A facile approach is proposed to fabricate a lotus leaf effect superhydrophobic coating constructed from calcium hydroxide microcapsules with a porous polymer shell. The capsules coated onto the substrates are robust due to the intermediate cured epoxy resin. A nanostructured hydrophobic calcium stearate precipitate forms by diffusion-restricted reaction upon treatment with soluble salt stearate, which is significant to allow water to freely roll off. Furthermore, the lotus leaf effect can be regenerated.