TY - JOUR

T1 - Development and characterization of new pervaporation PVA membranes for the dehydration using bulk and surface modifications

AU - Dmitrenko, Maria

AU - Penkova, Anastasia

AU - Kuzminova, Anna

AU - Missyul, Alexander

AU - Ermakov, Sergey

AU - Roizard, Denis

PY - 2018/6

Y1 - 2018/6

N2 - In the present work, the novel dense and supported membranes based on polyvinyl alcohol (PVA) with improved transport properties were developed by bulk and surface modifications. Bulk modification included the blending of PVA with chitosan (CS) and the creation of a mixed-matrix membrane by introduction of fullerenol. This significantly altered the internal structure of PVA membrane, which led to an increase in permeability with high selectivity to water. Surface modification of the developed modified dense membranes, based on composites PVA-CS and PVA-fullerenol-CS, was performed through (i) making of a supported membrane with a thin selective composite layer and (ii) applying of the layer-by-layer assembly (LbL) method for coating of nano-sized polyelectrolyte (PEL) layers to increase the membrane productivity. The nature of polyelectrolyte type-(poly(allylamine hydrochloride) (PAH), poly(sodium 4-styrenesulfonate) (PSS), poly(acrylic acid) (PAA), CS), and number of PEL bilayers (2-10)-were studied. The structure of the composite membranes was investigated by FTIR, X-ray diffraction, and SEM. Transport properties were studied during the pervaporation separation of 80% isopropanol-20% water mixture. It was shown that supported membrane consisting of hybrid layer of PVA-fullerenol (5%)-chitosan (20%) with five polyelectrolyte bilayers (PSS, CS) deposited on it had the best transport properties.

AB - In the present work, the novel dense and supported membranes based on polyvinyl alcohol (PVA) with improved transport properties were developed by bulk and surface modifications. Bulk modification included the blending of PVA with chitosan (CS) and the creation of a mixed-matrix membrane by introduction of fullerenol. This significantly altered the internal structure of PVA membrane, which led to an increase in permeability with high selectivity to water. Surface modification of the developed modified dense membranes, based on composites PVA-CS and PVA-fullerenol-CS, was performed through (i) making of a supported membrane with a thin selective composite layer and (ii) applying of the layer-by-layer assembly (LbL) method for coating of nano-sized polyelectrolyte (PEL) layers to increase the membrane productivity. The nature of polyelectrolyte type-(poly(allylamine hydrochloride) (PAH), poly(sodium 4-styrenesulfonate) (PSS), poly(acrylic acid) (PAA), CS), and number of PEL bilayers (2-10)-were studied. The structure of the composite membranes was investigated by FTIR, X-ray diffraction, and SEM. Transport properties were studied during the pervaporation separation of 80% isopropanol-20% water mixture. It was shown that supported membrane consisting of hybrid layer of PVA-fullerenol (5%)-chitosan (20%) with five polyelectrolyte bilayers (PSS, CS) deposited on it had the best transport properties.

KW - Bulk modification

KW - Chitosan

KW - Fullerenol

KW - Layer-by-layer assembly

KW - Poly(acrylic acid)

KW - Poly(allylamine hydrochloride)

KW - Poly(sodium 4-styrenesulfonate)

KW - Polyvinyl alcohol

KW - chitosan

KW - POLY(VINYL ALCOHOL)

KW - HYBRID MEMBRANE

KW - CARBON NANOTUBES

KW - COMPOSITE MEMBRANE

KW - WATER MIXTURES

KW - poly(allylamine hydrochloride)

KW - BLEND MEMBRANES

KW - bulk modification

KW - poly(acrylic acid)

KW - CHITOSAN

KW - POLYELECTROLYTE MULTILAYER MEMBRANES

KW - polyvinyl alcohol

KW - poly(sodium 4-styrenesulfonate)

KW - layer-by-layer assembly

KW - fullerenol

KW - SEPARATION

KW - LAYER

UR - http://www.scopus.com/inward/record.url?scp=85047493298&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/development-characterization-new-pervaporation-pva-membranes-dehydration-using-bulk-surface-modifica

U2 - 10.3390/polym10060571

DO - 10.3390/polym10060571

M3 - Article

AN - SCOPUS:85047493298

VL - 10

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 6

M1 - 571

ER -