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

被引：19

作者：

Chokki, J. ^{[1
,2
]}

Darracq, G. ^{[2
]}

Poelt, P. ^{[3
]}

Baron, J. ^{[2
]}

Gallard, H. ^{[1
]}

Joyeux, M. ^{[2
]}

Teychene, B. ^{[1
]}

机构：

[1] Univ Poitiers, Ecole Natl Super Ingenieurs Poitiers, IC2MP, UMR CNRS 7285, 7 Rue Marcel Dore,Batiment 16,TSA 41105, F-86073 Poitiers 9, France

[2] Eau Paris, Direct Rech & Dev & Qualite Eau, 33 Ave Jean Jaures, F-94200 Ivry, France

[3] Graz Univ Technol, NAWI Graz, Inst Electron Microscopy & Nanoanal, Steyrergasse 17, A-8010 Graz, Austria

来源：

POLYMER DEGRADATION AND STABILITY | 2019年 / 161卷

关键词：

Ultrafiltration; Membrane aging; Sodium hypochlorite; PES/PVP membrane; 2DCoS; FTIR-Mapping; POLY(ETHER SULFONE)/POLYVINYLPYRROLIDONE MEMBRANES; POLYSULFONE MEMBRANES; POLYVINYLPYRROLIDONE; EXPOSURE; CHLORINATION; IMPACT; PVDF;

D O I：

10.1016/j.polymdegradstab.2019.01.017

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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-FFIR 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-FTIRmicroscopy mapping unveiled that PVP was mainly situated at the inner surface of hollow fibers exhibiting initially a 67 mu m 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. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：131 / 138

页数：8

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