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BULEJKO, P. STRÁNSKÁ, E.
Original Title
Variations in anion-exchange membrane properties with ionic resin moisture
Type
journal article in Web of Science
Language
English
Original Abstract
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.
Keywords
Anion-exchange membrane, moisture, permselectivity, electrical resistance, microstructure
Authors
BULEJKO, P.; STRÁNSKÁ, E.
Released
16. 4. 2019
Publisher
Springer
Location
Německo
ISBN
0947-7047
Periodical
IONICS
Year of study
25
Number
9
State
Federal Republic of Germany
Pages from
4251
Pages to
4263
Pages count
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" }