Synthesis of novel guanidinium-based anion-exchange membranes with controlled microblock structures

Xue, Boxin; Duan, Xue; Yan-chun, LI; Zheng, Jifu; Li, Shenghai; Zhang, Suobo

doi:10.1016/j.memsci.2017.05.030

Cited by 86 publications

(39 citation statements)

References 40 publications

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“…The band of PNDB X -N at 1481 cm −1 is attributed to CH 2 deformation vibration in alkane. 29 The characteristic absorption peaks with wavenumber of 1659 cm −1 are clearly observed, which represent the quaternary amine group stretching vibration, 30,31 indicating the successful quaternization, and the peak intensity increases as the NVF mass fraction increases. The results indicate that opportune incorporation of the NVF and DVB copolymers into the porous PTFE substrate has been achieved.…”

Section: Ftirmentioning

confidence: 99%

Preparation of composite anion exchange membranes based on in‐situ copolymerization of N‐vinyl formamide and divinylbenzene in porous PTFE

Luo

Wang

Ren

et al. 2020

J of Applied Polymer Sci

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A series of composite anion exchange membranes was synthesized via in-situ copolymerization of various ratios N-vinyl formamide (NVF) and divinylbenzene (DVB), supported by porous polytetrafluoroethylene (PTFE) polymer matrix, and followed by alkaline hydrolysis, and quaternization of the composite membranes with epoxypropyltrimethylammonium chloride (EPTMAC). FTIR and SEM analyses revealed that the composite membranes were successfully prepared. Moreover, the hydrophilic property of the composite membrane improved by introduction of the quaternized poly(NVF-co-DVB) copolymer. Water uptake, swelling ratio, and conductivity showed upward trends by increase of NVF amount. The copolymer with 95% of NVF showed the highest elongation at break (102%, room temperature) and conductivity (5.15 × 10 −2 S/cm, 80 C). After immersion of the PNDB 95%-N membrane in 5 mol/L NaOH solution for 96 h at room temperature, the conductivity (60 C) of the membrane decreased to 3.99 × 10 −2 S/cm. Moreover, the membrane registered weight loss under 4.5%, caused by degradation of the quaternary ammonium groups in NaOH solution. All in all, in 3 mol/L methanol solutions, the composite membranes showed permeability ranging from 7.6% to 19.7%, if compared to the Nafion ®-115 membrane, showing good alcohol resistance.

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Section: Ftirmentioning

confidence: 99%

Preparation of composite anion exchange membranes based on in‐situ copolymerization of N‐vinyl formamide and divinylbenzene in porous PTFE

Luo

Wang

Ren

et al. 2020

J of Applied Polymer Sci

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“…根据聚合物骨架结构的不同, 目前报道的胍盐 AEMs可以分为聚醚砜类胍盐AEMs [18,25] 、聚苯醚类胍盐AEMs [23,24] 以及聚苯类胍盐AEMs [28] . [28] Figure 8 (Color online) The synthetic procedure (a) and degradation (b) of GPP-co-PAEK x copolymers [28] 进展 [36,37] Figure 9 The degradation process of the guanidinium cation in alkaline solution [35] 图 10 胍盐离子的降解机理 Figure 10 The degradation mechanism of guanidinium cations ; finally the degradation products urea and amine are formed. It is worth noting that the degradation process of guanidinium is evidently different from quaternary ammoniums.…”

Section: 不同骨架结构的胍盐Aemsmentioning

confidence: 99%

Advances in alkaline stable guanidinium based anion exchange membranes

2018

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“…A number of functional groups, based on quaternary ammonium or tertiary diamines , , benzimidazolium , , guadinium , , pyridinium , , or non‐nitrogen groups like phosphonium , , sulfonium , , or metal cation functional groups , , were tested. However, the chemical stability of all of them is primarily limited by concentration of the alkaline liquid electrolyte and operational temperature.…”

Section: Introductionmentioning

confidence: 99%

Design of a Zero‐Gap Laboratory‐Scale Polymer Electrolyte Membrane Alkaline Water Electrolysis Stack

Hnát

Kodým

Denk

et al. 2019

Chemie Ingenieur Technik

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The development of a zero-gap alkaline water electrolysis stack based on a heterogeneous anion-selective polymer electrolyte membrane is reported. A bipolar electrode arrangement was selected as the most appropriate one. The design was targeted to verify the suitability of the membrane electrode assembly design and the functionality of the gas separator system developed together with the purity of the gases produced. The influence of various operational regimes on the purity of the gases was investigated. Last, but not least, a validation of the mathematical model to be used for scale-up of the cell, foreseen for the next step of the project, was performed.

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Synthesis of novel guanidinium-based anion-exchange membranes with controlled microblock structures

Cited by 86 publications

References 40 publications

Preparation of composite anion exchange membranes based on in‐situ copolymerization of N‐vinyl formamide and divinylbenzene in porous PTFE

Preparation of composite anion exchange membranes based on in‐situ copolymerization of N‐vinyl formamide and divinylbenzene in porous PTFE

Advances in alkaline stable guanidinium based anion exchange membranes

Design of a Zero‐Gap Laboratory‐Scale Polymer Electrolyte Membrane Alkaline Water Electrolysis Stack

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