Detail publikačního výsledku

Variations in anion-exchange membrane properties with ionic resin moisture

BULEJKO, P.; STRÁNSKÁ, E.

Originální název

Variations in anion-exchange membrane properties with ionic resin moisture

Anglický název

Variations in anion-exchange membrane properties with ionic resin moisture

Druh

Článek WoS

Originální abstrakt

Moisture content in a strongly hydrophilic ion-exchange resin is one of the key parameters in commercial production of ion-exchange membranes. This work tried to clarify the effect of moisture content in an anion-exchange resin (AER) on the structure and final properties of anion-exchange membranes (AEMs). The AER was modified to 2, 4, 6 and 8% of moisture and then grinded. The modified AER was blended with polyethylene and extruded to prepare AEMs, some of which were hot-pressed. The microstructure and electrochemical properties of the AEMs were then characterized. Variations in electrochemical properties showed no definite moisture effect except ion exchange capacity, which decreased as AER moisture increased. The differences in changes in electrochemical properties were most apparent between pressed and non-pressed AEMs. Permselectivity and ionic resistance behaved similarly with AEMs fixed ion concentration. The ionic resistance decreased with increasing fixed ion concentration. The same was true for permselectivity which is, however, in contradiction to Donnan theory.

Anglický abstrakt

Moisture content in a strongly hydrophilic ion-exchange resin is one of the key parameters in commercial production of ion-exchange membranes. This work tried to clarify the effect of moisture content in an anion-exchange resin (AER) on the structure and final properties of anion-exchange membranes (AEMs). The AER was modified to 2, 4, 6 and 8% of moisture and then grinded. The modified AER was blended with polyethylene and extruded to prepare AEMs, some of which were hot-pressed. The microstructure and electrochemical properties of the AEMs were then characterized. Variations in electrochemical properties showed no definite moisture effect except ion exchange capacity, which decreased as AER moisture increased. The differences in changes in electrochemical properties were most apparent between pressed and non-pressed AEMs. Permselectivity and ionic resistance behaved similarly with AEMs fixed ion concentration. The ionic resistance decreased with increasing fixed ion concentration. The same was true for permselectivity which is, however, in contradiction to Donnan theory.

Klíčová slova

Anion-exchange membrane, moisture, permselectivity, electrical resistance, microstructure

Klíčová slova v angličtině

Anion-exchange membrane, moisture, permselectivity, electrical resistance, microstructure

Autoři

BULEJKO, P.; STRÁNSKÁ, E.

Rok RIV

2020

Vydáno

16.04.2019

Nakladatel

Springer

Místo

Německo

ISSN

0947-7047

Periodikum

IONICS

Svazek

25

Číslo

9

Stát

Spolková republika Německo

Strany od

4251

Strany do

4263

Strany počet

13

URL

https://link.springer.com/article/10.1007/s11581-019-02984-9

BibTex

@article{BUT156343,
  author="BULEJKO, P. and STRÁNSKÁ, E.",
  title="Variations in anion-exchange membrane properties with ionic resin moisture",
  journal="IONICS",
  year="2019",
  volume="25",
  number="9",
  pages="4251--4263",
  doi="10.1007/s11581-019-02984-9",
  issn="0947-7047",
  url="https://link.springer.com/article/10.1007/s11581-019-02984-9"
}