Investigation of Poly(ethersulfone)/Polyvinylpyrrolidone ultrafiltration membrane degradation by contact with sodium hypochlorite through FTIR mapping and two-dimensional correlation spectroscopy

J. Chokki, G. Darracq, Peter Pölt, J. Baron, H Gallard, M. Joyeux, B. Teychene

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

It is well recognized that chlorine is responsible for aging of membrane materials. The goal of this study is to investigate the modifications of a commercial PES/PVP hollow fiber membrane exposed to hypochlorite solution at pH 7.5 by continuous filtration. Thanks to ATR-FTIR 2D Correlation Spectroscopy (2DCoS) analysis it was confirmed that PVP is oxidized into succinimide compound. 2DCoS analysis revealed the sequence order of PES/PVP membrane degradation: PVP oxidation is followed by the modifications of C-H cyclic structures and finally the formation of succinimide compounds. ATR-FTIR-microscopy mapping unveiled that PVP was mainly situated at the inner surface of hollow fibers exhibiting initially a 67 μm thickness layer. PVP layer disappearance was not homogenous versus the exposure dose suggesting the topochemical character of the PVP-chlorine reaction. Results demonstrate that advanced material characterization are key methodologies to understand membrane aging mechanisms.

Originalspracheenglisch
Seiten (von - bis)131 - 138
Seitenumfang8
FachzeitschriftPolymer degradation and stability
Jahrgang161
DOIs
PublikationsstatusVeröffentlicht - 2019

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Sodium Hypochlorite
Povidone
Ultrafiltration
Sodium
sodium
succinimides
Spectroscopy
degradation
membranes
Membranes
Degradation
Chlorine
spectroscopy
chlorine
hollow
Aging of materials
Hypochlorous Acid
fibers
Fibers
Microscopic examination

Schlagwörter

    ASJC Scopus subject areas

    • !!Chemistry(all)
    • !!Condensed Matter Physics
    • !!Mechanics of Materials
    • !!Materials Chemistry
    • !!Polymers and Plastics

    Fields of Expertise

    • Advanced Materials Science

    Treatment code (Nähere Zuordnung)

    • Experimental

    Dies zitieren

    Investigation of Poly(ethersulfone)/Polyvinylpyrrolidone ultrafiltration membrane degradation by contact with sodium hypochlorite through FTIR mapping and two-dimensional correlation spectroscopy. / Chokki, J.; Darracq, G.; Pölt, Peter; Baron, J.; Gallard, H; Joyeux, M.; Teychene, B.

    in: Polymer degradation and stability, Jahrgang 161, 2019, S. 131 - 138.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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    title = "Investigation of Poly(ethersulfone)/Polyvinylpyrrolidone ultrafiltration membrane degradation by contact with sodium hypochlorite through FTIR mapping and two-dimensional correlation spectroscopy",
    abstract = "It is well recognized that chlorine is responsible for aging of membrane materials. The goal of this study is to investigate the modifications of a commercial PES/PVP hollow fiber membrane exposed to hypochlorite solution at pH 7.5 by continuous filtration. Thanks to ATR-FTIR 2D Correlation Spectroscopy (2DCoS) analysis it was confirmed that PVP is oxidized into succinimide compound. 2DCoS analysis revealed the sequence order of PES/PVP membrane degradation: PVP oxidation is followed by the modifications of C-H cyclic structures and finally the formation of succinimide compounds. ATR-FTIR-microscopy mapping unveiled that PVP was mainly situated at the inner surface of hollow fibers exhibiting initially a 67 μm thickness layer. PVP layer disappearance was not homogenous versus the exposure dose suggesting the topochemical character of the PVP-chlorine reaction. Results demonstrate that advanced material characterization are key methodologies to understand membrane aging mechanisms.",
    keywords = "2DCoS, FTIR-Mapping, Membrane aging, PES/PVP membrane, Sodium hypochlorite, Ultrafiltration",
    author = "J. Chokki and G. Darracq and Peter P{\"o}lt and J. Baron and H Gallard and M. Joyeux and B. Teychene",
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    AU - Chokki, J.

    AU - Darracq, G.

    AU - Pölt, Peter

    AU - Baron, J.

    AU - Gallard, H

    AU - Joyeux, M.

    AU - Teychene, B.

    PY - 2019

    Y1 - 2019

    N2 - It is well recognized that chlorine is responsible for aging of membrane materials. The goal of this study is to investigate the modifications of a commercial PES/PVP hollow fiber membrane exposed to hypochlorite solution at pH 7.5 by continuous filtration. Thanks to ATR-FTIR 2D Correlation Spectroscopy (2DCoS) analysis it was confirmed that PVP is oxidized into succinimide compound. 2DCoS analysis revealed the sequence order of PES/PVP membrane degradation: PVP oxidation is followed by the modifications of C-H cyclic structures and finally the formation of succinimide compounds. ATR-FTIR-microscopy mapping unveiled that PVP was mainly situated at the inner surface of hollow fibers exhibiting initially a 67 μm thickness layer. PVP layer disappearance was not homogenous versus the exposure dose suggesting the topochemical character of the PVP-chlorine reaction. Results demonstrate that advanced material characterization are key methodologies to understand membrane aging mechanisms.

    AB - It is well recognized that chlorine is responsible for aging of membrane materials. The goal of this study is to investigate the modifications of a commercial PES/PVP hollow fiber membrane exposed to hypochlorite solution at pH 7.5 by continuous filtration. Thanks to ATR-FTIR 2D Correlation Spectroscopy (2DCoS) analysis it was confirmed that PVP is oxidized into succinimide compound. 2DCoS analysis revealed the sequence order of PES/PVP membrane degradation: PVP oxidation is followed by the modifications of C-H cyclic structures and finally the formation of succinimide compounds. ATR-FTIR-microscopy mapping unveiled that PVP was mainly situated at the inner surface of hollow fibers exhibiting initially a 67 μm thickness layer. PVP layer disappearance was not homogenous versus the exposure dose suggesting the topochemical character of the PVP-chlorine reaction. Results demonstrate that advanced material characterization are key methodologies to understand membrane aging mechanisms.

    KW - 2DCoS

    KW - FTIR-Mapping

    KW - Membrane aging

    KW - PES/PVP membrane

    KW - Sodium hypochlorite

    KW - Ultrafiltration

    UR - http://www.scopus.com/inward/record.url?scp=85060348427&partnerID=8YFLogxK

    U2 - 10.1016/j.polymdegradstab.2019.01.017

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    M3 - Article

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    SP - 131

    EP - 138

    JO - Polymer degradation and stability

    JF - Polymer degradation and stability

    SN - 0141-3910

    ER -