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Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications

Membrane modification is becoming ever more relevant for mitigating fouling phenomena within wastewater treatment applications. Past research included a novel low-fouling coating using polymerizable bicontinuous microemulsion (PBM) induced by UV-LED polymerization. This additional cover layer deteri...

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Autores principales: Gukelberger, Ephraim, Hitzel, Christian, Mancuso, Raffaella, Galiano, Francesco, Bruno, Mauro Daniel Luigi, Simonutti, Roberto, Gabriele, Bartolo, Figoli, Alberto, Hoinkis, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7557819/
https://www.ncbi.nlm.nih.gov/pubmed/32967339
http://dx.doi.org/10.3390/membranes10090246
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author Gukelberger, Ephraim
Hitzel, Christian
Mancuso, Raffaella
Galiano, Francesco
Bruno, Mauro Daniel Luigi
Simonutti, Roberto
Gabriele, Bartolo
Figoli, Alberto
Hoinkis, Jan
author_facet Gukelberger, Ephraim
Hitzel, Christian
Mancuso, Raffaella
Galiano, Francesco
Bruno, Mauro Daniel Luigi
Simonutti, Roberto
Gabriele, Bartolo
Figoli, Alberto
Hoinkis, Jan
author_sort Gukelberger, Ephraim
collection PubMed
description Membrane modification is becoming ever more relevant for mitigating fouling phenomena within wastewater treatment applications. Past research included a novel low-fouling coating using polymerizable bicontinuous microemulsion (PBM) induced by UV-LED polymerization. This additional cover layer deteriorated the filtration capacity significantly, potentially due to the observed high pore intrusion of the liquid PBM prior to the casting process. Therefore, this work addressed an innovative experimental protocol for controlling the viscosity of polymerizable bicontinuous microemulsions (PBM) before casting on commercial ultrafiltration (UF) membranes. Prior to the coating procedure, the PBM viscosity modulation was carried out by controlled radical polymerization (CRP). The regulation was conducted by introducing the radical inhibitor 2,2,6,6-tetramethylpiperidine 1-oxyl after a certain time (CRP time). The ensuing controlled radical polymerized PBM (CRP-PBM) showed a higher viscosity than the original unpolymerized PBM, as confirmed by rheological measurements. Nevertheless, the resulting CRP-PBM-cast membranes had a lower permeability in water filtration experiments despite a higher viscosity and potentially lower pore intrusion. This result is due to different polymeric structures of the differently polymerized PBM, as confirmed by solid-state nuclear magnetic resonance (NMR) investigations. The findings can be useful for future developments in the membrane science field for production of specific membrane-coating layers for diverse applications.
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spelling pubmed-75578192020-10-22 Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications Gukelberger, Ephraim Hitzel, Christian Mancuso, Raffaella Galiano, Francesco Bruno, Mauro Daniel Luigi Simonutti, Roberto Gabriele, Bartolo Figoli, Alberto Hoinkis, Jan Membranes (Basel) Article Membrane modification is becoming ever more relevant for mitigating fouling phenomena within wastewater treatment applications. Past research included a novel low-fouling coating using polymerizable bicontinuous microemulsion (PBM) induced by UV-LED polymerization. This additional cover layer deteriorated the filtration capacity significantly, potentially due to the observed high pore intrusion of the liquid PBM prior to the casting process. Therefore, this work addressed an innovative experimental protocol for controlling the viscosity of polymerizable bicontinuous microemulsions (PBM) before casting on commercial ultrafiltration (UF) membranes. Prior to the coating procedure, the PBM viscosity modulation was carried out by controlled radical polymerization (CRP). The regulation was conducted by introducing the radical inhibitor 2,2,6,6-tetramethylpiperidine 1-oxyl after a certain time (CRP time). The ensuing controlled radical polymerized PBM (CRP-PBM) showed a higher viscosity than the original unpolymerized PBM, as confirmed by rheological measurements. Nevertheless, the resulting CRP-PBM-cast membranes had a lower permeability in water filtration experiments despite a higher viscosity and potentially lower pore intrusion. This result is due to different polymeric structures of the differently polymerized PBM, as confirmed by solid-state nuclear magnetic resonance (NMR) investigations. The findings can be useful for future developments in the membrane science field for production of specific membrane-coating layers for diverse applications. MDPI 2020-09-21 /pmc/articles/PMC7557819/ /pubmed/32967339 http://dx.doi.org/10.3390/membranes10090246 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gukelberger, Ephraim
Hitzel, Christian
Mancuso, Raffaella
Galiano, Francesco
Bruno, Mauro Daniel Luigi
Simonutti, Roberto
Gabriele, Bartolo
Figoli, Alberto
Hoinkis, Jan
Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title_full Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title_fullStr Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title_full_unstemmed Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title_short Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications
title_sort viscosity modification of polymerizable bicontinuous microemulsion by controlled radical polymerization for membrane coating applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7557819/
https://www.ncbi.nlm.nih.gov/pubmed/32967339
http://dx.doi.org/10.3390/membranes10090246
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