Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties

With the increasing demand for liquid manipulation and microfluidic techniques, surfaces with external stimuli induced real-time tunable wetting properties are getting into the focus of materials science research. In this study, we present poly(dimethylsiloxane) (PDMS) copolymer-based composite coat...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	László Mérai, Ágota Deák, Balázs Szalai, Gergely Ferenc Samu, Gábor Katona, László Janovák
Formato:	article
Lenguaje:	EN
Publicado:	Budapest University of Technology 2022
Materias:	polymer composites stimulus-responsive photodegradation smart polymers coatings Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/cf47bb5f7adc4120ae7ab163fb594ec2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cf47bb5f7adc4120ae7ab163fb594ec2
record_format	dspace
spelling	oai:doaj.org-article:cf47bb5f7adc4120ae7ab163fb594ec22021-11-24T10:46:50ZVisible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties1788-618X10.3144/expresspolymlett.2022.4https://doaj.org/article/cf47bb5f7adc4120ae7ab163fb594ec22022-01-01T00:00:00Zhttp://www.expresspolymlett.com/letolt.php?file=EPL-0011516&mi=cdhttps://doaj.org/toc/1788-618XWith the increasing demand for liquid manipulation and microfluidic techniques, surfaces with external stimuli induced real-time tunable wetting properties are getting into the focus of materials science research. In this study, we present poly(dimethylsiloxane) (PDMS) copolymer-based composite coatings with thermally adjustable wetting and visible-light photoreactivity. To give thermal responsivity to the spray-coated or doctor blade-casted PDMS surfaces, they were grafted with poly(N-isopropylacrylamide) (PNIPAAm), applying the Activators Regenerated by Electron Transfer – Atom Transfer Radical Polymerization (ARGET-ATRP) method. As the lower critical solution temperature (LCST) of the grafted PNIPAAm chains appeared to be 34°C, the copolymer films showed thermoresponsive, and PNIPAAm surface concentration-dependent wetting characteristics. The addition of 15 wt% visible light-active plasmonic Ag-TiO2 photocatalyst nanoparticles (dprimary ~50 nm) enriched the coatings with photocatalytic activity, which was also proven to be temperature-dependent during methylene-blue (MB; c0 = 6.25 mM) photodegradation tests (blue LED-light, λ = 405 nm) at the S/L-interface. Thanks to the real-time tunable wetting and photocatalytic properties, the presented coatings may offer a novel route towards sophisticated liquid manipulation.László MéraiÁgota DeákBalázs SzalaiGergely Ferenc SamuGábor KatonaLászló JanovákBudapest University of Technology articlepolymer compositesstimulus-responsivephotodegradationsmart polymerscoatingsMaterials of engineering and construction. Mechanics of materialsTA401-492Chemical technologyTP1-1185ENeXPRESS Polymer Letters, Vol 16, Iss 1, Pp 34-51 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	polymer composites stimulus-responsive photodegradation smart polymers coatings Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
spellingShingle	polymer composites stimulus-responsive photodegradation smart polymers coatings Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185 László Mérai Ágota Deák Balázs Szalai Gergely Ferenc Samu Gábor Katona László Janovák Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
description	With the increasing demand for liquid manipulation and microfluidic techniques, surfaces with external stimuli induced real-time tunable wetting properties are getting into the focus of materials science research. In this study, we present poly(dimethylsiloxane) (PDMS) copolymer-based composite coatings with thermally adjustable wetting and visible-light photoreactivity. To give thermal responsivity to the spray-coated or doctor blade-casted PDMS surfaces, they were grafted with poly(N-isopropylacrylamide) (PNIPAAm), applying the Activators Regenerated by Electron Transfer – Atom Transfer Radical Polymerization (ARGET-ATRP) method. As the lower critical solution temperature (LCST) of the grafted PNIPAAm chains appeared to be 34°C, the copolymer films showed thermoresponsive, and PNIPAAm surface concentration-dependent wetting characteristics. The addition of 15 wt% visible light-active plasmonic Ag-TiO2 photocatalyst nanoparticles (dprimary ~50 nm) enriched the coatings with photocatalytic activity, which was also proven to be temperature-dependent during methylene-blue (MB; c0 = 6.25 mM) photodegradation tests (blue LED-light, λ = 405 nm) at the S/L-interface. Thanks to the real-time tunable wetting and photocatalytic properties, the presented coatings may offer a novel route towards sophisticated liquid manipulation.
format	article
author	László Mérai Ágota Deák Balázs Szalai Gergely Ferenc Samu Gábor Katona László Janovák
author_facet	László Mérai Ágota Deák Balázs Szalai Gergely Ferenc Samu Gábor Katona László Janovák
author_sort	László Mérai
title	Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
title_short	Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
title_full	Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
title_fullStr	Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
title_full_unstemmed	Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
title_sort	visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties
publisher	Budapest University of Technology
publishDate	2022
url	https://doaj.org/article/cf47bb5f7adc4120ae7ab163fb594ec2
work_keys_str_mv	AT laszlomerai visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties AT agotadeak visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties AT balazsszalai visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties AT gergelyferencsamu visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties AT gaborkatona visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties AT laszlojanovak visiblelightphotoreactivecompositesurfaceswiththermoresponsivewettingandphotocatalyticproperties
_version_	1718415077323833344

Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties

Ejemplares similares