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...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2022-01-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0011516&mi=cd |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-cf47bb5f7adc4120ae7ab163fb594ec2 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-cf47bb5f7adc4120ae7ab163fb594ec22025-08-20T03:57:44ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2022-01-01161345110.3144/expresspolymlett.2022.4Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic propertiesLászló MéraiÁgota DeákBalázs SzalaiGergely Ferenc SamuGábor KatonaLászló JanovákWith 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.http://www.expresspolymlett.com/letolt.php?file=EPL-0011516&mi=cdpolymer compositesstimulus-responsivephotodegradationsmart polymerscoatings |
| spellingShingle | László Mérai Ágota Deák Balázs Szalai Gergely Ferenc Samu Gábor Katona László Janovák Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties eXPRESS Polymer Letters polymer composites stimulus-responsive photodegradation smart polymers coatings |
| title | 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_short | Visible light-photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties |
| title_sort | visible light photoreactive composite surfaces with thermoresponsive wetting and photocatalytic properties |
| topic | polymer composites stimulus-responsive photodegradation smart polymers coatings |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0011516&mi=cd |
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