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pH-Triggered Membrane in Pervaporation Process.

Abstract
Dehydration of binary methyl acetate-water mixtures under neutral, acidic, and basic conditions was carried out by using PERVAP composite membranes based on polyvinyl alcohol and poly(1-vinylpyrrolidone-co-2-(dimethylamino)ethyl methacrylate) P(VP-co-DMAEMA). The effects of an acid (HCl) and a base (NaOH) on the separation performance of the membrane during the pervaporation process were investigated. The pH-responsive nature of membranes has been confirmed by swelling tests and analysis of the chemical structure of polymeric membranes. In addition, a mechanism of ring-opening of VP units is proposed and correlated to the changes of membrane separation performance.
AuthorsAlessandro Angelini, Csaba Fodor, Wilfredo Yave, Luigi Leva, Anja Car, Wolfgang Meier
JournalACS omega (ACS Omega) Vol. 3 Issue 12 Pg. 18950-18957 (Dec 31 2018) ISSN: 2470-1343 [Electronic] United States
PMID31458459 (Publication Type: Journal Article)

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