title: Enhanced Pervaporation Properties of PVA-Based Membranes Modified with Polyelectrolytes. Application to IPA Dehydration
metadata.name: dc.contributor.author
metadata.value: Dmitrenko, Mariia
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kuzminova, Anna
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Zolotarev, Andrey
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Ermakov, Sergey
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Roizard, Denis
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Penkova, Anastasia
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-03-24T10:50:08Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-03-24T10:50:08Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2019-12-19
metadata.lang: -
metadata.name: dc.identifier
metadata.value: 10.3390/polym12010014
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 10.3390/polym12010014
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/17280
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: In this work, dense and supported pervaporation polyvinyl alcohol (PVA)-based membranes modified with poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrenesulfonate)(PSS)/PAH top nanolayers were synthesized. Two main points were investigated: the role of the polyelectrolyte PAH on water selectivity of the selective polymer matrix and the impact of the porous substrate based on polyacrylonitrile (PAN) and aromatic polysulfone amide (UPM-20®), used to get supported high-performance membranes. Various methods of analysis (fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), small-angle X-ray scattering (SAXS), porosity, contact angles, ultrafiltration) were applied to study the developed membranes. Transport characteristics of the developed membranes were studied in isopropanol dehydration by pervaporation. Obtained results are discussed in the light of the structure and physicochemical characteristics of these PVA/PAH membranes and the types of porous substrate. It was shown that the PAN-supported membrane with the selective layer based on PVA/PAH modified by 10 polyelectrolyte PSS/PAH bilayers possessed ~4.5 times higher permeation flux with the same high selectivity level (99.9 wt % water in the permeate) for the dehydration of the isopropanol (20 wt % water) at 60 °C compared to the commercial analog PERVAPTM 1201.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: РНФ № 17-73-20060
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: polyvinyl alcohol; polyelectrolyte; pervaporation; ultrafiltration; layer-by-layer deposition; isopropanol
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Enhanced Pervaporation Properties of PVA-Based Membranes Modified with Polyelectrolytes. Application to IPA Dehydration
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: ПАН_2020.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/17280/1/%d0%9f%d0%90%d0%9d_2020.pdf
resources.format: Adobe PDF
resources.size: 9,48 MB