Abstract
In this study, we investigated the fouling properties of poly（vinyl alcohol）（PVA）-based anion-exchange membranes（AEMs） with a negatively-charged layer on the membrane surface by an electrodialysis test using a mixed NaCl and sodium linear-alkyl benzenesulfonate solution. In the ED test, the slope in the voltage drop-time curve of the prepared AEM with coating of 2 wt.％ polyanion solution was about 1/50 of that of a commercial standard AEM, NEOSEPTA® AMX（ASTOM corp.）, indicating that the hydrophilic matrix and the negatively-charged layer of the prepared AEM shows higher anti-fouling properties than AMX, and the anti-fouling properties of the AEMs increase with increasing coating solution concentration of the negatively-charged layer. These results indicate that our modification method can be used in the preparation of AEMs with high anti-organic-fouling properties.
