Anion exchange membranes, methods of preparation and uses

摘要

The present invention provides anion exchange membranes, processes for producing same and uses thereof. The anion exchange membranes according to embodiments of the present invention achieve a desirable combination of low resistance, high permselectivity and low degree of dimensional swelling. Anion exchange membranes according to embodiments of the present invention are also cost effective.

主权项

1. A coating for a spacer in an electrodialysis unit, the coating comprising:
i) a first aromatic polymer comprising cationic groups bound to an aromatic backbone of the first aromatic polymer through alkylene groups; and ii) a second aromatic polymer comprising aromatic amino groups, wherein an amine is directly attached to the aromatic ring; wherein the first aromatic polymer and the second aromatic polymer are crosslinked through an alkylene bridge between an aromatic ring of the aromatic backbone of the first aromatic polymer and the amine of the second aromatic polymer.