Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

In this research, we report a simple and inexpensive way to prepare transparent and hydrophobic hybrid coatings through deposition of different silica materials on polyvinyl chloride (PVC) substrates. The silica materials were prepared using an acid-catalyzed sol–gel method at room temperature (25 ±...

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Autores principales:	Violeta Purcar, Valentin Rădițoiu, Alina Rădițoiu, Florentina Monica Raduly, Georgiana Cornelia Ispas, Simona Căprărescu, Adriana Nicoleta Frone, Bogdan Trică, Cristian-Andi Nicolae, Mihai Anastasescu, Hermine Stroescu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sol–gel method silica materials hydrophobic coatings PVC substrate Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b13e8834570f441791e89c4311cb88e4
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spelling	oai:doaj.org-article:b13e8834570f441791e89c4311cb88e42021-11-25T16:43:24ZEffect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings10.3390/app1122110442076-3417https://doaj.org/article/b13e8834570f441791e89c4311cb88e42021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/11044https://doaj.org/toc/2076-3417In this research, we report a simple and inexpensive way to prepare transparent and hydrophobic hybrid coatings through deposition of different silica materials on polyvinyl chloride (PVC) substrates. The silica materials were prepared using an acid-catalyzed sol–gel method at room temperature (25 ± 2 °C), using alkoxysilanes: tetraethoxysilane (TEOS), as the silica source, and ethoxydimethylvinylsilane (DMVES), triethoxyoctylsilane (OTES), and trimethoxyhexadecylsilane (HDTMES), as modifier agents. The obtained materials were characterized (either as powders or as thin films) by Fourier-transform infrared spectroscopy (FTIR), UV/Vis spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), atomic force microscopy (AFM), spectroscopic ellipsometry (SE), and water contact-angle measurements. UV/Vis spectra showed that the PVC substrate coated with the silica material containing TEOS/DMVES/OTES had a transmittance of about 90% in the wavelength range of 650–780 nm. The water contact angles increased from 83° for uncoated PVC substrate to ~94° for PVC substrates coated with the sol–gel silica materials. These PVC films with hybrid silica coatings can be used as the materials for outdoor applications, such as energy-generating solar panel window blinds or PVC clear Windmaster outdoor blinds.Violeta PurcarValentin RădițoiuAlina RădițoiuFlorentina Monica RadulyGeorgiana Cornelia IspasSimona CăprărescuAdriana Nicoleta FroneBogdan TricăCristian-Andi NicolaeMihai AnastasescuHermine StroescuMDPI AGarticlesol–gel methodsilica materialshydrophobic coatingsPVC substrateTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 11044, p 11044 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sol–gel method silica materials hydrophobic coatings PVC substrate Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	sol–gel method silica materials hydrophobic coatings PVC substrate Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Violeta Purcar Valentin Rădițoiu Alina Rădițoiu Florentina Monica Raduly Georgiana Cornelia Ispas Simona Căprărescu Adriana Nicoleta Frone Bogdan Trică Cristian-Andi Nicolae Mihai Anastasescu Hermine Stroescu Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
description	In this research, we report a simple and inexpensive way to prepare transparent and hydrophobic hybrid coatings through deposition of different silica materials on polyvinyl chloride (PVC) substrates. The silica materials were prepared using an acid-catalyzed sol–gel method at room temperature (25 ± 2 °C), using alkoxysilanes: tetraethoxysilane (TEOS), as the silica source, and ethoxydimethylvinylsilane (DMVES), triethoxyoctylsilane (OTES), and trimethoxyhexadecylsilane (HDTMES), as modifier agents. The obtained materials were characterized (either as powders or as thin films) by Fourier-transform infrared spectroscopy (FTIR), UV/Vis spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), atomic force microscopy (AFM), spectroscopic ellipsometry (SE), and water contact-angle measurements. UV/Vis spectra showed that the PVC substrate coated with the silica material containing TEOS/DMVES/OTES had a transmittance of about 90% in the wavelength range of 650–780 nm. The water contact angles increased from 83° for uncoated PVC substrate to ~94° for PVC substrates coated with the sol–gel silica materials. These PVC films with hybrid silica coatings can be used as the materials for outdoor applications, such as energy-generating solar panel window blinds or PVC clear Windmaster outdoor blinds.
format	article
author	Violeta Purcar Valentin Rădițoiu Alina Rădițoiu Florentina Monica Raduly Georgiana Cornelia Ispas Simona Căprărescu Adriana Nicoleta Frone Bogdan Trică Cristian-Andi Nicolae Mihai Anastasescu Hermine Stroescu
author_facet	Violeta Purcar Valentin Rădițoiu Alina Rădițoiu Florentina Monica Raduly Georgiana Cornelia Ispas Simona Căprărescu Adriana Nicoleta Frone Bogdan Trică Cristian-Andi Nicolae Mihai Anastasescu Hermine Stroescu
author_sort	Violeta Purcar
title	Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
title_short	Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
title_full	Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
title_fullStr	Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
title_full_unstemmed	Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings
title_sort	effect of modified silica materials on polyvinyl chloride (pvc) substrates to obtain transparent and hydrophobic hybrid coatings
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b13e8834570f441791e89c4311cb88e4
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Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

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