Electrospun polyethersulfone fibrous mats: Sulfonation, its characterization and solution-phase ammonium sorption behavior

Kwak, Noh-Seok; Jung, Won Ho; Park, Hui-Man; Hwang, Taek Sung

doi:10.1016/j.cej.2012.10.065

Cited by 14 publications

(6 citation statements)

References 32 publications

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“…The membranes showed good removal of Cu 2+ and Ca 2+ ions because of more exposed functional groups [ 82 ]. Sulfonation of electrospun NF membranes of various polymers such as PS [ 83 , 84 ] and PES [ 85 ] to prepare cation-exchange NF membranes for adsorption are reported. Kwak et al prepared IEX NF membranes by sulfonation of electrospun PES NFs and the maximum adsorption for ammonium ions reached 14.08 mg·g −1 [ 85 ].…”

Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

“…Sulfonation of electrospun NF membranes of various polymers such as PS [ 83 , 84 ] and PES [ 85 ] to prepare cation-exchange NF membranes for adsorption are reported. Kwak et al prepared IEX NF membranes by sulfonation of electrospun PES NFs and the maximum adsorption for ammonium ions reached 14.08 mg·g −1 [ 85 ]. In addition, NF membranes functionalized with phosphoric acid and carboxylic acid groups are studied as cation-exchange adsorbents.…”

Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

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De Novo Ion-Exchange Membranes Based on Nanofibers

2021

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The unique functions of nanofibers (NFs) are based on their nanoscale cross-section, high specific surface area, and high molecular orientation, and/or their confined polymer chains inside the fibers. The introduction of ion-exchange (IEX) groups on the surface and/or inside the NFs provides de novo ion-exchangers. In particular, the combination of large surface areas and ionizable groups in the IEX-NFs improves their performance through indices such as extremely rapid ion-exchange kinetics and high ion-exchange capacities. In reality, the membranes based on ion-exchange NFs exhibit superior properties such as high catalytic efficiency, high ion-exchange and adsorption capacities, and high ionic conductivities. The present review highlights the fundamental aspects of IEX-NFs (i.e., their unique size-dependent properties), scalable production methods, and the recent advancements in their applications in catalysis, separation/adsorption processes, and fuel cells, as well as the future perspectives and endeavors of NF-based IEMs.

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Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

Section: Applications Of Nanofiber-based Iemsmentioning

confidence: 99%

De Novo Ion-Exchange Membranes Based on Nanofibers

2021

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“…Kwak et al . reported the preparation of ion‐exchange fibrous mats by the electrospinning of poly(ethersulfone) followed by sulfonation . They found that the degree of sulfonation and IEC were proportional to the sulfonation time, and the water uptake increased with the degree of sulfonation.…”

Section: Applications Of Ion‐exchange Nanofibersmentioning

confidence: 99%

Nanofibers as novel platform for high‐functional ion exchangers

Zhang

Tanioka

Matsumoto

2018

J of Chemical Tech & Biotech

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Nanofibers have unique functionalities based on their nanoscaled cross‐section, high specific surface area, and high molecular orientation inside the fibers. These functionalities can be improved by controlling their diameter, surface and internal structures. The introduction of ion‐exchange sites on the surface and/or inside the nanofibers provides novel high‐functional ion‐exchangers with high surface areas, high ion‐exchange and adsorption capacities, and high ionic conductivities. The present review highlights the fundamental aspects of ion‐exchange nanofibers (i.e. their size‐dependent unique properties and production methods) and their recent advances in the environment and energy applications (i.e. separation/purification processes and fuel cells). © 2018 Society of Chemical Industry

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“…13 It is an economical and versatile method that is complementary to contemporary textile fiber technology. 14 The electrospun polymer fibers that have high surface area-to-volume 15,16 and length-to-diameter ratios are of considerable interest for various kinds of applications such as filtration, protective clothing, biomedicine, and water absorption. [17][18][19][20] It has been found that the performance of the polymer fibers is related to morphology.…”

Section: Introductionmentioning

confidence: 99%

Electrospun carboxylic-functionalized poly(arylene ether ketone) ultrafine fibers

Liu

Wang

Cheng

et al. 2015

High Performance Polymers

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As a high-performance polymer, carboxylic-functionalized poly(arylene ether ketone)s (PCA-PAEK) was electrospun into ultrafine fibers and characterized. To optimize the process, a set of experiments were designed. As a result, the optimum condition was obtained and the polymer concentration was determined as the most important factor. Incidentally, the PCA-PAEK fibers were found to exhibit superabsorbent behavior. In order to investigate processing characteristics, PCA-PAEK fibers fabricated from different solution concentrations were employed and characterized. The results showed that porosity and changes in water contact angle and water absorbency decreased with an increase in concentration. In addition to a high water absorption capacity, the fibers exhibited good water retention and repeated water absorbency as well. The study on kinetics of water absorption and swelling behavior showed that the mechanism was dependent on the polymer concentration from which the fibers were electrospun. Moreover, both dry and wet PCA-PAEK fibers showed high mechanical properties. Due to these properties, the PCA-PAEK ultrafine fibers are potentially useful as a water-absorbent material.

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Electrospun polyethersulfone fibrous mats: Sulfonation, its characterization and solution-phase ammonium sorption behavior

Cited by 14 publications

References 32 publications

De Novo Ion-Exchange Membranes Based on Nanofibers

De Novo Ion-Exchange Membranes Based on Nanofibers

Nanofibers as novel platform for high‐functional ion exchangers

Electrospun carboxylic-functionalized poly(arylene ether ketone) ultrafine fibers

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