Journal
POLYMER
Volume 48, Issue 26, Pages 7455-7460Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2007.10.038
Keywords
super-hydrophobic; phase separation; reorientation
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Super-hydrophobic film is commonly prepared from hydrophobic materials. Poly(methyl methacrylate) (PMMA) is considered as a hydrophilic polymer (intrinsic contact angle below 90 degrees) with the water contact angle (CA) of similar to 68 degrees. However, a super-hydrophobic PMMA film with CA of similar to 154 degrees was obtained by treating polystyrene (PS) and PMMA blended film in a warm selective solvent, cyclohexane. The surface was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (FT-IR). The results show that the conversion from the hydrophilic surface to a super-hydrophobic one is due to the cooperation of the micro-, nano-structure and the side group reorientation in the PMMA chains at the topmost. (C) 2007 Elsevier Ltd. All rights reserved.
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