The alkali stability of radiation-grafted anion-exchange membranes containing pendent 1-benzyl-2,3-dimethylimidazolium head-groups
Abstract
Radiation-grafted anion-exchange membranes (AEM) containing pendent benzyltrimethylammonium, 1-benzyl-3-methylimidazolium and 1-benzyl-2,3-dimethylimidazolium functional head-groups were synthesised with ion-exchange capacities in the range 1.7–1.9 meq g−1. The ionic conductivities of the AEMs were also comparable (24.5 ± 1.8 mS cm−1 at 50 °C). The alkali stability (in aqueous