Poly (maleic anhydride-alt-1-alkenes) directly grafted to γ-alumina for high-performance organic solvent nanofiltration membranes

Journal article (2018)

Authors

M. Amirilargani OLD ChemE/Organic Materials and Interfaces
Renaud B. Merlet University of Twente
Arian Nijmeijer University of Twente
Louis Winnubst University of Twente
L.C.P.M. de Smet Wageningen University & Research, OLD ChemE/Organic Materials and Interfaces
Ernst J. R. Sudhölter OLD ChemE/Organic Materials and Interfaces
Research Group
OLD ChemE/Organic Materials and Interfaces
Alumina membrane Organic solvent nanofiltration Alternating copolymer Grafting
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Published Date

2018

Language

English

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Research Group

OLD ChemE/Organic Materials and Interfaces

Abstract

In this study we describe a novel and simple method to couple covalently poly (maleic anhydride-alt-1-alkenes) to γ-alumina nanofiltration membranes for the first time. The 1-alkenes varied from 1-hexene, 1-decene, 1-hexadecane to 1-octadecene. The grafting reaction was between the reactive anhydride moieties of the polymer and surface hydroxyl groups, resulting in highly stable bonds. The modified membranes were investigated for their permeation and rejection performance of Sudan Black (SB, Mw 457 Da) in either toluene or ethyl acetate (EA) solution, and very high rejections (> 90%) and high permeation flux were observed compared to unmodified membranes. Initially, the SB in toluene solution was found to bind strongly to the surface hydroxyl groups of the unmodified membranes, an effect not observed in EA solution.