کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5366973 | 1388359 | 2011 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Organic-inorganic hybrid superhydrophobic surfaces using methyltriethoxysilane and tetraethoxysilane sol-gel derived materials in emulsion Organic-inorganic hybrid superhydrophobic surfaces using methyltriethoxysilane and tetraethoxysilane sol-gel derived materials in emulsion](/preview/png/5366973.png)
By applying alkaline-catalyzed co-hydrolysis and copolycondensation reactions of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) in organic siloxane modified polyacrylate emulsion (OSPA emulsion), we are able to demonstrate the potential for developing a sol-gel derived organic-inorganic hybrid emulsion for a superhydrophobic surface research. TEOS and MTES derived sol-gel moieties can be designed for a physical roughness and hydrophobic characteristic (Si-CH3) of the hybrid superhydrophobic surface, while OSPA emulsion can be endowed for good film-forming property. The effect of formulation parameters on superhydrophobicity and film-forming property was analyzed. The water contact angle (WCA) on the sol-gel derived hybrid film is determined to be 156°, and the contact angle hysteresis is 5° by keeping the mole ratio of TEOS:MTES:C2H5OH:NH3·H2O:AMP-95 at 1:4:30:10:0.63 and the mass percentage of OSPA emulsion at 25%. The nanoparticle-based silica rough surface is observed as the mole ratio of MTES/TEOS at 4:1. The sol-gel derived organic-inorganic hybrid emulsion shows remarkable film-forming property when the mole ratio of MTES/TEOS reaches or exceeds 4:1. With the primer coating, the performance of superhydrophobic film achieve actual use standard. It reveals that this new procedure is an effective shortcut to obtain a superhydrophobic surface with potential applications.
⺠A superhydrophobic surface was prepared by the sol-gel derived organic-inorganic hybrid emulsion. ⺠This hybrid emulsion can be achieved by alkaline-catalyzed co-hydrolysis and copolycondensation reactions of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) in organic siloxane modified polyacrylate emulsion (OSPA emulsion). ⺠The water contact angle (WCA) on the sol-gel derived hybrid film is determined to be 158°, and the contact angle hysteresis is 5° by keeping the mole ratio of TEOS:MTES:C2H5OH:NH3·H2O:AMP-95 at 1:4:30:10:0.63 and the mass percentage of OSPA emulsion at 25%. ⺠With the primer coating. ⺠The performance of superhydrophobic film achieve actual use standard.
Journal: Applied Surface Science - Volume 258, Issue 3, 15 November 2011, Pages 991-998