TY - JOUR

T1 - Enhanced Pervaporation Properties of PVA-Based Membranes Modified with Polyelectrolytes. Application to IPA Dehydration

AU - Dmitrenko, Mariia

AU - Kuzminova , Anna

AU - Zolotarev, Andrey

AU - Ermakov , Sergey

AU - Roizard, Denis

AU - Penkova , Anastasia

N1 - Dmitrenko, M.; Kuzminova, A.; Zolotarev, A.; Ermakov, S.; Roizard, D.; Penkova, A. Enhanced Pervaporation Properties of PVA-Based Membranes Modified with Polyelectrolytes. Application to IPA Dehydration. Polymers 2020, 12, 14.

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Polyvinyl alcohol

KW - polyelectrolyte

KW - pervaporation

KW - Ultrafiltration

KW - Layer-by-layer deposition

KW - ISOPROPANOL

KW - Polyelectrolyte

KW - Isopropanol

KW - Pervaporation

KW - MULTILAYER MEMBRANES

KW - CHITOSAN

KW - POLY(VINYL ALCOHOL)

KW - ultrafiltration

KW - ISOPROPYL ALCOHOL/WATER MIXTURES

KW - isopropanol

KW - polyvinyl alcohol

KW - WATER MIXTURES

KW - MIXED MATRIX MEMBRANES

KW - POLYMER

KW - ETHANOL

KW - SEPARATION

KW - layer-by-layer deposition

UR - http://www.scopus.com/inward/record.url?scp=85079268310&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/162514db-e50c-3da6-8e0d-a0a1b167ea03/

U2 - 10.3390/polym12010014

DO - 10.3390/polym12010014

M3 - Article

VL - 12

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 1

M1 - 14

ER -