抄録
Permeation of four kinds of divalent metal chlorides (CuCl2, NiCl2, CoCl2, CaCl2) through charged poly (4-vinylpyridine-co-acrylonitrile) membranes with varying degrees of 4-vinylpyridine (4VP) contents (91, 83, 73, 20 mol %) were measured at 25 and 40°C for different upstream salt concentrations (0.01 and 0.02 M or 0.1 and 1 M). It was found that a permselectivity, P (CuCl2)/P(CaCl2), was variable from 0.11 to 1800 depending on the 4VP density, temperature, and the salt concentration. Effects of these three factors on permeation, diffusion and partition of the salts were discussed in relation to the stability of metal/4VP complexes formed in the membranes.
