The effect of surface hydrophobicity on the ultrasonically erosion of polymer surface PMMA and PC

Both surface chemistry and surface topology play the key roles in final surface properties of any material. Hydrophobicity, form the other hand, is the physicalperformance of a solid surface with extraordinary low surface energy and is measured by the angle which water drop meets the surface so that should be larger than 90° close 180°, bydefinition [1]. This has recently been shown that dual surface roughness, both in Mirco and Nano scale roughness, is necessary inorder to reach a real superhydrophobicity, of course, being mimicked from nature. In this work Water Contact Angle of PMMA (75°) andPC (90°) was increased to 112° by simple coating and the effects of ultrasonic wave irradiation on hydrophobic PMMA and PC surfaces was investigated.