Detail publikace
Variations in anion-exchange membrane properties with ionic resin moisture
BULEJKO, P. STRÁNSKÁ, E.
Anglický název
Variations in anion-exchange membrane properties with ionic resin moisture
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
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 anglicky
Anion-exchange membrane, moisture, permselectivity, electrical resistance, microstructure
Vydáno
16.04.2019
Nakladatel
Springer
Místo
Německo
ISSN
0947-7047
Ročník
25
Číslo
9
Strany od–do
4251–4263
Počet stran
13
BIBTEX
@article{BUT156343,
author="Pavel {Bulejko},
title="Variations in anion-exchange membrane properties with ionic resin moisture",
year="2019",
volume="25",
number="9",
month="April",
pages="4251--4263",
publisher="Springer",
address="Německo",
issn="0947-7047"
}