Abstract
We studied on the relationship between crosslinked structure and impermeability of bivalent ions in anion exchange membrane of alkylene amine type.
1) Alicyclic type epoxy resins having various chain lengths were used for basic materials of membrane, as well as molecules with various chain lengths for crosslinking agents.
2) Membranes were prepared by BBP process and TOM process, in which respectively bisphenol butoxide and trioximethylene were utilized as crosslinking agents.
3) Crosslinked structure was adjusted by curing temperature.
4) Membrane prepared from resin with long chain and crosslinking agent with short chain, or the former with short chain and the latter with long chain had the most densely crosslinked structure in a condition in which electric resistance was maximum and permselectivity of bivalent ions minimum. On the other hand, membrane prepared from resin and crosslinking agent both having long chains or both short chains showed quite different behavior from the above.
