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Fatma Kurs¸ un,Nuran Is¸ ıklan 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.41 No.-
This study aims to develop thermo-responsive poly(N-isopropylacrylamide) (PNIPAAm) graftedpoly(vinyl alcohol) (PVA-g-PNIPAAm) copolymer membranes for separation of isopropyl alcohol(IPA)/water mixtures via pervaporation. PVA-g-PNIPAAm copolymers were synthesized by microwavesupportedgraft copolymerization. Structure of copolymers was characterized by element analysis, FTIR,TGA/DTG/DSC, 13C NMR and SEC. PVA-g-PNIPAAm membranes prepared with casting technique werecharacterized by SEM-AFM. Effects of grafting yield, operation temperature, and feed concentration onseparation factor and flux were investigated to determine the membrane performance. The maximumseparation factor was 95 with flux of 0.011 kg/m2 h at 87.4% IPA. Thermo-responsive PVA-g-PNIPAAmmembranes developed in this study are promising for pervaporation.