# Balanced Ionic Conductivity and Permselectivity of Cation Exchange Membranes Prepared from Sulfonated Poly(ether sulfone)

https://mdr.nims.go.jp/datasets/3498999f-a3f5-4dae-90e2-d3328c9fe02b

## File

- [Main manuscript of SPES_ACS Omega_R2.pdf](https://mdr.nims.go.jp/filesets/f9207546-ac9d-4a3e-a894-45036b0a9ee6/download) ([Detail](https://mdr.nims.go.jp/filesets/f9207546-ac9d-4a3e-a894-45036b0a9ee6.md))

## Id

3498999f-a3f5-4dae-90e2-d3328c9fe02b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-01-15T00:11:09.981855Z

## Updated at

2026-01-15T04:11:17.904405Z

## Published at

2026-01-15T07:21:06.699134Z

## Doi

https://doi.org/10.48505/nims.6128

## First published url

https://doi.org/10.1021/acsomega.5c09018

## Date published

2026-01-13

## Recorded date published

2026-1-13

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Balanced Ionic Conductivity and Permselectivity of Cation Exchange Membranes
    Prepared from Sulfonated Poly(ether sulfone)
  title_type: original
  lang: en

## Description

- description: "Sulfonated poly(ether sulfone) (S-PES) was synthesized through the
    post-sulfonation of poly(ether sulfone)(PES) with chlorosulfonic acid as the sulfonating
    agent. The degree of sulfonation (DS) of the produced S-PES was controlled between
    13.2 and 36.2% by adjusting the reaction time. The DS values were determined by
    elemental analysis, 1H-NMR, and titration against 0.01 M NaOH. The presence of
    sulfonic acid groups was confirmed using 1H-NMR and FT-IR analyses. The produced
    S-PES with different DS values were cast into membranes. The performance of these
    materials as cation-exchange membranes (CEMs) was evaluated in detail, in light
    of their ion exchange capacity, water uptake, hydration number, charge density,
    contact angle, thermal and long-term stability, ionic conductivity, and permselectivity.
    The properties of the obtained membranes were compared to various reported CEMs,
    including industrial benchmarks such as Nafion-117, Fuji CEM, FKS-20, CMX, and
    CSE. We demonstrate that our work achieved the best balance between ionic conductivity
    and permselectivity through finely controlled DS optimization. The best-performing
    membrane was found to have a DS of 32.4% with a significantly high ionic conductivity
    of 16.85 mS cm-1 and a high permselectivity of 98.0% in 0.5 M NaCl. Our work sheds
    light on the crucial interplay between various membrane properties as the degree
    of functionalization stepwise varies. The fabricated membranes are promising candidates
    for advancing electrodialysis-based desalination and salinity-driven renewable
    energy production technologies.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Hussien K. Srour
  role: author
  orcid: https://orcid.org/0000-0002-6068-7495
  organization: National Institute for Materials Science
- name: Mizuki Inoue
  role: author
  orcid: https://orcid.org/0000-0003-3098-5448
  organization: National Institute for Materials Science
- name: Edhuan Ismail
  role: author
  orcid: https://orcid.org/0000-0003-1031-6562
  organization: National Institute for Materials Science
- name: Minato Higa
  role: author
- name: Mitsuru Higa
  role: author
- name: László Szabó
  role: author
  orcid: https://orcid.org/0000-0003-4268-4423
  organization: National Institute for Materials Science
- name: Izumi Ichinose
  role: author
  orcid: https://orcid.org/0000-0002-2236-0942
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: cation exchange membranes
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-12-18

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Omega
  issn: '24701343'
  volume: '11'
  issue: '1'
  start_page: 1437
  end_page: 1446

## Conference



## Related item



## Funding

- identifier: JPJ012307
  funder_name: NIMS
  description: SIP

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Fileset

- id: f9207546-ac9d-4a3e-a894-45036b0a9ee6
  filename: Main manuscript of SPES_ACS Omega_R2.pdf
  content_type: application/pdf
  size: 1376964
  md5: aa06ef1bebaaef54498b2eb6d071e0d0

## Thumbnail

fileset_id: f9207546-ac9d-4a3e-a894-45036b0a9ee6
filename: Main manuscript of SPES_ACS Omega_R2.pdf