High-performance membranes with full pH-stability

Abstract : Following current strong demands from, among others, paper, food and mining industries, a novel type of nanofiltration membrane was developed, which displays excellent performance in terms of selectivity/flux with a unique combination of chemical stability over the full (0-14) pH-range and thermal stability up to 120 °C. The membrane consists of polyvinylidene fluoride grafted with polystyrene sulfonic acid. The optimum membrane showed water permeances of 2.4 L h-1 m-2 bar-1 while retaining NaCl, MgSO4 and Rhodamine B (479 Da) for respectively ≈60%, ≈80% and andgt;96%. © 2018 The Royal Society of Chemistry.
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N. Daems, S. Milis, R. Verbeke, A. Szymczyk, P.P. Pescarmona, et al.. High-performance membranes with full pH-stability. RSC Advances, Royal Society of Chemistry, 2018, 8 (16), pp.8813-8827. ⟨10.1039/c7ra13663c⟩. ⟨hal-01740155⟩

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