Synthesis and Conductive Property of Alkaline Anion-Exchange Membranes Based on Poly(vinyl alcohol)/Bis(2-chloroethyl) Ether-1,3-bis3-(dimethylamino)propyl Urea Copolymer Composite

摘要

This study reports a new type of alkaline anion-exchange membranes consisting of poly (vinyl alcohol) (PVA) and poly Bis(2-chloroethyl) ether-1,3-bis [3-(dimethylamino)propyl] urea copolymer (PUB). The membranes were prepared by a combined chemical cross-linking method with different concentration solution consisting of glutaraldehyde as a cross-linker. The OH" conductivity of the membranes was found to be increased with increasing mass ratio of PUB, and reached high up to 6.78 × 10~(-3)S cm~(-1) at room temperature. It is found that the conductivity reached 7.60 × 10~(-3)S cm~(-1) under ambient conditions when the membrane were immersed into the cross-linking reaction solution consisting of 15 wt.% GA. Moreover, the OH~- conductivities were all gradually increased with increasing temperature, where the maximum OH~-conductivity of 9.28 × 10~(-3) S cm~(-1) was obtained at 80℃.