| 초록 |
Anion exchange membranes based on quarternary ammonium functionalized poly(ether sulfone ketone)s block copolymers (QA-PESK) having various hydrophilic-hydrophobic oligomer block ratios were synthesized, and the effect of the block length on the membranes’ physicochemical and electrical properties was systematically investigated. The QA-PESK-10-18 membrane, prepared with a hydrophilic and hydrophobic block ratio of 10:18, displayed a well-balanced hydrophilic/hydrophobic phase separation, and hence the highest conductivity, together with the highest alkaline stability, among three different block ratios (10:7, 10:18 and 10:26), indicating that the membranes’ properties are closely related with the their morphology brought by the control of hydrophilic/hydrophobic ratio of the block copolymers. The block ratio effect on the corresponding membranes will be discussed in detail. |
