Permeation and separation characteristics of acetic acid/water mixtures through poly(vinyl alcohol-g-itaconic acid) membranes by pervaporation, evapomeation, and temperature-difference evapomeation

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dc.contributor.authorIsiklan, N.
dc.contributor.authorSanli, O.
dc.date.accessioned2020-06-25T17:40:03Z
dc.date.available2020-06-25T17:40:03Z
dc.date.issued2004
dc.departmentKırıkkale Üniversitesi
dc.description.abstractIn this study, itaconic acid (IA) was grafted onto poly(vinyl alcohol) (PVA) with cerium(IV) ammonium nitrate as an initiator at 45degreesC. The grafted PVA was characterized with Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and differential scanning calorimetry. IA-grafted PVA membranes were prepared with a casting method, and the permeation and separation characteristics of acetic acid/water mixtures were investigated with pervaporation (PV), evapomeation (EV) and temperature-difference evapomeation (TDEV) methods. The effects of the feed composition, operating temperature, and temperature of the membrane surroundings on the permeation rate and separation factor for the acetic acid/water mixtures were studied. The permeation rates in EV were lower than those in PV, whereas the separation factors were higher. With the TDEV method, the permeation rates decreased and the separation factors increased as the temperature of the membrane surroundings decreased. The prepared membranes were also tested in PV, EV, and TDEV to separate the various compositions of the acetic acid/water mixtures (20-90 wt % acetic acid) at 40degreesC. The highest separation factor, 686, was obtained in TDEV with a 90 wt % acetic acid concentration in the feed. The activation energies of permeation in PV and EV were calculated to be 8.5 and 10.2 kcal/mol, respectively, for a 20 wt % acetic acid solution. (C) 2004 Wiley Periodicals, Inc.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1002/app.20710
dc.identifier.endpage2333en_US
dc.identifier.issn0021-8995
dc.identifier.issn1097-4628
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-4043089752
dc.identifier.scopusqualityQ2
dc.identifier.startpage2322en_US
dc.identifier.urihttps://doi.org/10.1002/app.20710
dc.identifier.urihttps://hdl.handle.net/20.500.12587/3237
dc.identifier.volume93en_US
dc.identifier.wosWOS:000223020200042
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWileyen_US
dc.relation.ispartofJournal Of Applied Polymer Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectgraft copolymersen_US
dc.subjectmembranesen_US
dc.subjectseparation techniquesen_US
dc.titlePermeation and separation characteristics of acetic acid/water mixtures through poly(vinyl alcohol-g-itaconic acid) membranes by pervaporation, evapomeation, and temperature-difference evapomeationen_US
dc.typeArticle

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