Investigation on structure and properties of anion exchange membranes based on tetramethylbiphenol moieties containing copoly(arylene ether)s

Li, Xiuhua; Wang, Liuchan; Cheng, Shanshan

doi:10.1002/app.41525

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…This kind of polymers can be subdivided into: aliphatic copolymers synthesized by free radical polymerization 133–140, plasma‐polymerization 141–144, ring‐opening polymerization 145, 146, ATRP 147 and RAFT 148, random aromatic copolymers 149–175, copolymers with locally high concentration of ammonium moieties 176–184, and multi‐block copolymers 185–190, especially with long hydrophilic/hydrophobic blocks 191–197.…”

Section: Aems For Aemfcsmentioning

confidence: 99%

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

et al. 2015

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This review focuses on various synthesis strategies of anion‐exchange membranes (AEMs) for fuel cells, diverse methodologies of AEM‐forming, together with relationship between structures and properties. AEMs are discussed from seven categories, including (1) AEMs derived from Nafion precursors with sulfonyl fluoride groups, which display excellent stability and well‐developed morphologies that similar to Nafion, but has potentially high costs. (2) AEMs prepared by grafting technologies, such as chemical grafting technique, ATRP technique, plasma grafting technique and radiation grafting technique. (3) AEMs based on functionalized commercial polymers, including PVA, SEBS, CPP, PEEK, PES, PEI, PPO, and so on. (4) AEMs prepared by newly‐synthesized polymers, in which the most interesting approach is to synthesize alkaline multi‐block copolymers with enough long hydrophilic/hydrophobic blocks. (5) AEMs containing heterogeneous composition, which mainly prepared by blending and sol‐gel methods, reinforced or pore‐filling AEMs and IPN or s‐IPN. (6) AEMs with functional groups different from quaternary ammonium, which includes the studies of new type of AEMs with highly chemical stability in alkaline solution. (7) Hybrid membranes combining AEM with PEM, in which new configuration results in different performances. At last, conclusions and perspectives for the future researches of AEMs are presented.

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Section: Aems For Aemfcsmentioning

confidence: 99%

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

et al. 2015

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“…First, a series of tetramethyl biphenyl bearing poly(arylene ethers) (PAEs) (PAE‐a to PAE‐e) with tuned sulfone–ketone structures were synthesized by aromatic nucleophilic substitution through changes in the molar ratio of DFBP to DFDPS according to a previous work . The molar ratios of DFBP to DFDPS ( m 1 / m 2 ) for PAE‐a to PAE‐e were 1:0, 3:1, 1:1, 1:3, and 0:1, respectively.…”

Section: Methodsmentioning

confidence: 99%

Influence of 2,2′,6,6′‐tetramethyl biphenol‐based anion‐exchange membranes on the diffusion dialysis of hydrochloride acid

Yu-bao

Chen

et al. 2017

J of Applied Polymer Sci

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Quaternary ammonium functionalized poly(arylene ether) (QPAE-Br) membranes based on 2,2 0 ,6,6 0 -tetramethyl biphenol for diffusion dialysis (DD) were designed and successfully fabricated via nucleophilic substitution polycondensation, bromination, film casting, and quaternization. The structures, thicknesses, ion-exchange capacities (IECs), water uptakes, swelling ratios, ion conductivities, and mechanical properties of QPAE-Br were used to characterize the membranes. The influence of the membrane structures on the DD performances was investigated by DD tests of simulated industrial pickling wastewater (1 mol/L HCl, 0.1 mol/L FeCl 2 ). The DD results show QPAE-a (IEC 5 1.51 mmol/g) as the best DD candidate. Predialysis treatments further improved the DD performances of QPAE-Br. QPAE-a exhibited an excellent proton diffusion coefficient (U H 1 ) of 0.033 m/h and a high separation factor (S) of 95.45 after the predialysis treatment at room temperature; these values were much higher than those of the commercial DF-120B membrane (0.004 m/h for U H 1 and 24.3 for S at 25 8C) and other reported DD membranes. QPAE-a has great potential for acid recovery via DD.

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“…The aromatic protons located in the benzene ring varied between 6.8 and 7.9 ppm this is based on the observed peaks of H f , H c , and H e at 7.2 ppm and 6.9 ppm respectively. H d , on the other hand, was found at 7.8 ppm [21][22][23]. H c and H e are found in the high field because the neighboring carbon is substituted by electron donor, and H d is found in the low field due to the neighboring carbon is substituted by aliphatic carbon chains.…”

Section: H-nmrmentioning

confidence: 97%

Anion Exchange Membranes Obtained from Poly(arylene ether sulfone) Block Copolymers Comprising Hydrophilic and Hydrophobic Segments

et al. 2020

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The anion exchange membrane may have different physical and chemical properties, electrochemical performance and mechanical stability depending upon the monomer structure, hydrophilicity and hydrophobic repeating unit, surface form and degree of substitution of functional groups. In current work, poly(arylene ether sulfone) (PAES) block copolymer was created and used as the main chain. After controlling the amount of NBS, the degree of bromination (DB) was changed in Br-PAES. Following that, quaternized PAES (Q-PAES) was synthesized through quaternization. Q-PAES showed a tendency of enhancing water content, expansion rate, ion exchange capacity (IEC) as the degree of substitution of functional groups increased. However, it was confirmed that tensile strength and dimensional properties of membrane reduced while swelling degree was increased. In addition, phase separation of membrane was identified by atomic force microscope (AFM) image, while ionic conductivity is greatly affected by phase separation. The Q-PAES membrane demonstrated a reasonable power output of around 64 mW/cm2 while employed as electrolyte in fuel cell operation.

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Investigation on structure and properties of anion exchange membranes based on tetramethylbiphenol moieties containing copoly(arylene ether)s

Abstract: Quaternary ammonium functionalized poly(arylene ether)s (QPAEs) containing 2,2 0 ,6,6 0 -tetramethylbiphenol moieties were designed and successfully synthesized via nucleophilic substitution polycondensation, bromination, quaternization and alkalization.

Cited by 7 publications

References 38 publications

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

Influence of 2,2′,6,6′‐tetramethyl biphenol‐based anion‐exchange membranes on the diffusion dialysis of hydrochloride acid

Anion Exchange Membranes Obtained from Poly(arylene ether sulfone) Block Copolymers Comprising Hydrophilic and Hydrophobic Segments

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