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

Authors :
Mauro Daniel Luigi Bruno
Jan Hoinkis
Ephraim Gukelberger
Alberto Figoli
Raffaella Mancuso
Christian Hitzel
Bartolo Gabriele
Roberto Simonutti
Francesco Galiano
Gukelberger, E
Hitzel, C
Mancuso, R
Galiano, F
Bruno, M
Simonutti, R
Gabriele, B
Figoli, A
Hoinkis, J
Source :
Membranes (Basel) 10 (2020). doi:10.3390/membranes10090246, info:cnr-pdr/source/autori:E. Gukelberger, C. Hitzel, R. Mancuso, F. Galiano, M. D. L. Bruno, R. Simonutti, B. Gabriele, A. Figoli, J. Hoinkis/titolo:Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications/doi:10.3390%2Fmembranes10090246/rivista:Membranes (Basel)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:10, Membranes, Volume 10, Issue 9, Membranes, Vol 10, Iss 246, p 246 (2020)
Publication Year :
2020
Publisher :
Molecular Diversity Preservation International, Basel, 2020.

Abstract

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.

Details

Language :
English
Database :
OpenAIRE
Journal :
Membranes (Basel) 10 (2020). doi:10.3390/membranes10090246, info:cnr-pdr/source/autori:E. Gukelberger, C. Hitzel, R. Mancuso, F. Galiano, M. D. L. Bruno, R. Simonutti, B. Gabriele, A. Figoli, J. Hoinkis/titolo:Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications/doi:10.3390%2Fmembranes10090246/rivista:Membranes (Basel)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:10, Membranes, Volume 10, Issue 9, Membranes, Vol 10, Iss 246, p 246 (2020)
Accession number :
edsair.doi.dedup.....76fc015593b5db938963869651f43fd1
Full Text :
https://doi.org/10.3390/membranes10090246