Microporous anion-exchange membranes made of semi-interpenetrating polymer network

Mbareck, Chamekh; Métayer, M. Le; Nguyen, Quang Trong; Alexandre, Stéphane; Malandain, J.J.

doi:10.1016/s0376-7388(03)00227-8

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…The semi-homogeneous membranes have shown significantly high performance despite its low manufacturing cost. Among these semi-homogeneous membranes, the one with semi-interpenetrating polymer network (sIPN) morphology [20] is a typical candidate which represented an effective way to improve the compatibility between the mixed polymers [21,22]. The sIPN is composed of a cross-linked polymer network and an immobilized linear polymer.…”

Section: Introductionmentioning

confidence: 99%

Diffusion dialysis membranes with semi-interpenetrating network for acid recovery

Cheng

Yang

et al. 2015

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Diffusion dialysis membranes with semi-interpenetrating network for acid recovery

Cheng

Yang

et al. 2015

Journal of Membrane Science

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“…2,5,[6][7][8][9][10] Thus, it is urgent to develop an eco-friendly method for the preparation of AEM. 11 Several types of polymers, such as poly(2,6-dimethyl-1,4-phenylene oxide) (PPO), copolymer of chloromethylstyrene and divinylbenzene, PVDF-vinylbenzyl chloride, and poly(vinyl alcohol)-poly(1,3-diethyl-1-1-vinyl imidazolium bromide), were used for the preparation of AEMs. [12][13][14][15][16][17][18][19][20][21] Various AEMs were prepared via chloromethylation of polysulfone, poly(etherimide), and Cardo poly(ether sulfone) based polymers using chloromethyl ether (CME) followed by amination with a tertiary amine.…”

Section: Introductionmentioning

confidence: 99%

A green method for the preparation of highly stable organic-inorganic hybrid anion-exchange membranes in aqueous media for electrochemical processes

et al. 2010

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Alkaline membranes also termed as anion exchange membranes (AEMs) have recently become important materials for electrochemical technology, alkaline fuel cells, and electrolyzers. We report a simple synthesis procedure for an anion-exchange silica precursor (AESP) by epoxide ring opening reaction using 3-aminopropyltriethoxysilane (APTEOS) and glycidyltrimethylammonium chloride (GDTMAC). The AESP-poly(vinyl alcohol) (PVA) organic-inorganic hybrid AEM was prepared by the sol-gel method in acidic medium followed by chemical crosslinking of -OH groups via formal reaction. The reported method is a ''green'' alternative for the production of AEM without the use of any solvent residues or hazardous chemicals. This simplified procedure in aqueous media avoids the use of chloromethyl methyl ether (CME), a carcinogen and harmful to human health. These AEMs (especially AEM-70) were designed to possess all the required properties of a highly anion conductive membrane such as high water uptake (67.3%), ion-exchange capacity (1.36 mequiv g À1 ), and permselectivity (0.94), along with reasonable conductivity (7.61 mS cm À1 ) due to quaternary ammonium group functionality. Electroosmotic studies revealed quite low mass drag and equivalent pore radius (2.31-5.28 A ) of the membrane, which are also desirable properties of an efficient AEM. Electrodialytic performance of the AEM-70 membrane revealed its suitability for applications in electro-membrane processes.

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“…On the other hand, recently, poly (vinyl alcohol) (PVA)-based ion-exchange membranes have been studied [25,26,27,28]. Since PVA is a semi-crystalline polymer, heat-treatment above the glass-transition temperature [29,30] increases the crystallinity of the polymer, which acts as a physical network [31].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PVA-Based Hollow Fiber Ion-Exchange Membranes and Their Performance for Donnan Dialysis

et al. 2019

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Hollow fiber type cation-exchange (C-HF) membranes and hollow fiber type anion-exchange (A-HF) membranes were prepared from poly (vinyl alcohol) (PVA)-based copolymer with cation-exchange groups and by blending PVA and polycation, respectively, by a gel fiber spinning method. In order to control the water content of the hollow fiber membranes, the membranes were cross-linked physically by annealing, and then cross-linked chemically by using glutaraldehyde (GA) solutions at various GA concentrations. The outer diameter of C-HF and A-HF membranes were ca. 1000 μm and ca. 1500 μm, respectively, and the thickness of the membranes were ca. 170 μm and 290 μm, respectively. Permeation experiments were carried out in two Donnan dialysis systems, which included mixed 0.1 M NaCl and 0.1 M CaCl2/C-HF /3 × 10−4 M CaCl2 and mixed 0.1 M NaCl and 0.1 M NaNO3/A-HF/3 × 10−4 M NaNO3 to examine ionic perm selectivity of the membranes. In the Donnan dialysis experiments using C-HF membranes, uphill transport of the divalent cations occurred, and, in the case of A-HF membranes, uphill transport of NO3− ions occurred. C-HF and A-HF membranes had about half of the flux in the uphill transported ions and also about half of the selectivity between the uphill transport ions and driven ions in comparison with those of the commercial flat sheet cation-exchange membrane (Neosepta® CMX) and anion-exchange membrane (Neosepta® AMX). Yet, IEC of C-HF and A-HF membranes were about one fifth of CMX and less than half of AMX, respectively. Since hollow fiber membrane module will have higher packing density than a flat membrane stack, the hollow fiber type ion-exchange membranes (IEMs) prepared in this study will have a potential application to a Donnan dialysis process.

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Microporous anion-exchange membranes made of semi-interpenetrating polymer network

Cited by 6 publications

References 34 publications

Diffusion dialysis membranes with semi-interpenetrating network for acid recovery

Diffusion dialysis membranes with semi-interpenetrating network for acid recovery

A green method for the preparation of highly stable organic-inorganic hybrid anion-exchange membranes in aqueous media for electrochemical processes

Preparation of PVA-Based Hollow Fiber Ion-Exchange Membranes and Their Performance for Donnan Dialysis

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