Transparent Superhydrophobic silica coatings on glass by sol–gel method
Wetting behavior of solid surfaces is a key concern in our daily life as well as in engineering and science. In the present study, we demonstrate a simple dip coating method for the preparation of Thermally stable, transparent superhydrophobic silica films on glass substrates at room temperature by...
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| Veröffentlicht in: | Applied surface science 2010-11, Vol.257 (2), p.333-339 |
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| creator | Mahadik, Satish A. Kavale, Mahendra S. Mukherjee, S.K. Rao, A. Venkateswara |
| description | Wetting behavior of solid surfaces is a key concern in our daily life as well as in engineering and science. In the present study, we demonstrate a simple dip coating method for the preparation of Thermally stable, transparent superhydrophobic silica films on glass substrates at room temperature by sol–gel process. The coating alcosol was prepared by keeping the molar ratio of methyltriethoxysilane (MTES), trimethylmethoxysilane (TMMS), methanol (MeOH), water (H2O) constant at 1:0.09:12.71:3.58, respectively with 13M NH4OH throughout the experiments and the films were prepared with different deposition time varied from 5 to 25h. In order to improve the hydrophobicity of as deposited silica films, the films were derivatized with 10% trimethylchlorosilane (TMCS) as a silylating agent in hexane solvent for 24h. Enhancement in wetting behavior was observed for surface derivatized silica films which showed a maximum static water contact angle (172°) and minimum sliding angle (2°) for 25h of deposition time. The superhydrophobic silica films retained their superhydrophobicity up to a temperature of 550°C. The silica films were characterized by field emission scanning electron microscopy (FE-SEM), surface profilometer, Fourier transform infrared (FT-IR) spectroscopy, thermo-gravimetric and differential thermal analysis (TG–DTA), percentage of optical transmission, water contact angle measurements. The imperviousness behavior of the films was tested with various acids. |
| doi_str_mv | 10.1016/j.apsusc.2010.06.062 |
| format | Article |
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Enhancement in wetting behavior was observed for surface derivatized silica films which showed a maximum static water contact angle (172°) and minimum sliding angle (2°) for 25h of deposition time. The superhydrophobic silica films retained their superhydrophobicity up to a temperature of 550°C. The silica films were characterized by field emission scanning electron microscopy (FE-SEM), surface profilometer, Fourier transform infrared (FT-IR) spectroscopy, thermo-gravimetric and differential thermal analysis (TG–DTA), percentage of optical transmission, water contact angle measurements. 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Venkateswara</creatorcontrib><title>Transparent Superhydrophobic silica coatings on glass by sol–gel method</title><title>Applied surface science</title><description>Wetting behavior of solid surfaces is a key concern in our daily life as well as in engineering and science. In the present study, we demonstrate a simple dip coating method for the preparation of Thermally stable, transparent superhydrophobic silica films on glass substrates at room temperature by sol–gel process. The coating alcosol was prepared by keeping the molar ratio of methyltriethoxysilane (MTES), trimethylmethoxysilane (TMMS), methanol (MeOH), water (H2O) constant at 1:0.09:12.71:3.58, respectively with 13M NH4OH throughout the experiments and the films were prepared with different deposition time varied from 5 to 25h. In order to improve the hydrophobicity of as deposited silica films, the films were derivatized with 10% trimethylchlorosilane (TMCS) as a silylating agent in hexane solvent for 24h. Enhancement in wetting behavior was observed for surface derivatized silica films which showed a maximum static water contact angle (172°) and minimum sliding angle (2°) for 25h of deposition time. The superhydrophobic silica films retained their superhydrophobicity up to a temperature of 550°C. The silica films were characterized by field emission scanning electron microscopy (FE-SEM), surface profilometer, Fourier transform infrared (FT-IR) spectroscopy, thermo-gravimetric and differential thermal analysis (TG–DTA), percentage of optical transmission, water contact angle measurements. The imperviousness behavior of the films was tested with various acids.</description><subject>Coating</subject><subject>Coatings</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Contact angle</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Deposition</subject><subject>Exact sciences and technology</subject><subject>Glass</subject><subject>Infrared and Raman spectra</subject><subject>Infrared and raman spectra and scattering</subject><subject>Materials science</subject><subject>Materials synthesis; materials processing</subject><subject>Methyl alcohol</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Physics</subject><subject>Silica glass</subject><subject>Silicon dioxide</subject><subject>Sliding angle</subject><subject>Sol gel process</subject><subject>Sol-gel processing, precipitation</subject><subject>Solid-fluid interfaces</subject><subject>Superhydrophobic</subject><subject>Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)</subject><subject>Transparent</subject><subject>Wetting</subject><issn>0169-4332</issn><issn>1873-5584</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kMtqIzEQRcWQgXGc-YNZ9GbIqh09Wv3YBILJCwJZJFkLdXXJlmm3elTtgHf5h_nDfEkUbLIMXCi4daqKuoz9EXwhuCgvNgs70o5gIXmyeJkkf7CZqCuVa10XJ2yWsCYvlJK_2CnRhnMhU3fG7p-jHWi0EYcpe9qNGNf7LoZxHVoPGfneg80g2MkPK8rCkK16S5S1-4xC__72f4V9tsVpHboz9tPZnvD3sc7Zy8318_Iuf3i8vV9ePeSgynrKK-1cI0tRtMpB06KDDhuui1JwJVQLsm4aJ3klnbKi65xMhtYggMuiLTSqOTs_7B1j-LdDmszWE2Df2wHDjkxVV7ypa6USWRxIiIEoojNj9Fsb90Zw8xmc2ZhDcOYzOMPLJJnG_h4PWALbuxQQePqalUoWUmiduMsDh-nbV4_REHgcADsfESbTBf_9oQ87-4cR</recordid><startdate>20101101</startdate><enddate>20101101</enddate><creator>Mahadik, Satish A.</creator><creator>Kavale, Mahendra S.</creator><creator>Mukherjee, S.K.</creator><creator>Rao, A. 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Venkateswara</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transparent Superhydrophobic silica coatings on glass by sol–gel method</atitle><jtitle>Applied surface science</jtitle><date>2010-11-01</date><risdate>2010</risdate><volume>257</volume><issue>2</issue><spage>333</spage><epage>339</epage><pages>333-339</pages><issn>0169-4332</issn><eissn>1873-5584</eissn><abstract>Wetting behavior of solid surfaces is a key concern in our daily life as well as in engineering and science. In the present study, we demonstrate a simple dip coating method for the preparation of Thermally stable, transparent superhydrophobic silica films on glass substrates at room temperature by sol–gel process. The coating alcosol was prepared by keeping the molar ratio of methyltriethoxysilane (MTES), trimethylmethoxysilane (TMMS), methanol (MeOH), water (H2O) constant at 1:0.09:12.71:3.58, respectively with 13M NH4OH throughout the experiments and the films were prepared with different deposition time varied from 5 to 25h. In order to improve the hydrophobicity of as deposited silica films, the films were derivatized with 10% trimethylchlorosilane (TMCS) as a silylating agent in hexane solvent for 24h. Enhancement in wetting behavior was observed for surface derivatized silica films which showed a maximum static water contact angle (172°) and minimum sliding angle (2°) for 25h of deposition time. The superhydrophobic silica films retained their superhydrophobicity up to a temperature of 550°C. The silica films were characterized by field emission scanning electron microscopy (FE-SEM), surface profilometer, Fourier transform infrared (FT-IR) spectroscopy, thermo-gravimetric and differential thermal analysis (TG–DTA), percentage of optical transmission, water contact angle measurements. The imperviousness behavior of the films was tested with various acids.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apsusc.2010.06.062</doi><tpages>7</tpages></addata></record> |
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| subjects | Coating Coatings Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Contact angle Cross-disciplinary physics: materials science rheology Deposition Exact sciences and technology Glass Infrared and Raman spectra Infrared and raman spectra and scattering Materials science Materials synthesis materials processing Methyl alcohol Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Physics Silica glass Silicon dioxide Sliding angle Sol gel process Sol-gel processing, precipitation Solid-fluid interfaces Superhydrophobic Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Transparent Wetting |
| title | Transparent Superhydrophobic silica coatings on glass by sol–gel method |
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