New responsive property of poly(ε-caprolactone) as the thermal switch from superhydrophobic to superhydrophilic

A reversible switch between superhydrophobicity at low temperature and superhydrophilicity at high temperature was fabricated by coating poly(epsilon-caprolactone) on a rough substrate, which resulted from the combination of the different adaptability of the polymer chain upon crystalline/amorphous phase transition and the optimized roughness.