화학공학소재연구정보센터
Applied Surface Science, Vol.257, No.16, 7054-7060, 2011
Fabrication of superhydrophobic binary nanoparticles/PMMA composite coating with reversible switching of adhesion and anticorrosive property
Ag-TiO2-Thiol/Poly(methyl methacrylate) (PMMA) coating has been prepared via adsorbed-layer nanoreactor technique and self-assembling method. The composite coating shows a superhydrophobic property with reversible switching of adhesion. In the UV-vis spectra, absorption appeared in ultraviolet region of 229-293nm (UVC region) and 320-370nm (UVA region). Additionally, the stability of the superhydrophobic surface was tested under the following conditions: (1) in basic solution (pH = 14); (2) in acid solution (pH = 1); (3) in artificial seawater. The coating shows stability since the contact angle of the sample still remained higher than 150 degrees in the above conditions. The corrosion resistance of the superhydrophobic surfaces was investigated by electrochemical measurements and the results revealed that the superhydrophobic coatings are anticorrosive well. (C) 2011 Elsevier B.V. All rights reserved.