抄録
The effect of adding certain inorganic salts mainly containing transition metal chlorides (hexahydrate) to the casting solutions of nylon 4 is to swell the nylon 4 membranes and to improve the permeability of NaCl solute for the nylon 4 dialysis membranes. Swelling is affected by the formation of complexes involving the inorganic salts and the amide group of the nylon 4 polymer substrate. The morphologies using scanning electron microscopy (SEM) were studied. The permeability of NaCl and the water content evaluated as a function of the amount of inorganic salts : FeCl3·6H2O, CoCl2·6H2O, NiCl2·6H2O, CuCl2·6H2O and AlCl3·6H2O added. Especially, the best permeability of NaCl is the nylon 4 membrane by adding the different amount of aluminum chloride. The nylon 4 membranes were analyzed by UV-Visible and FT-IR spectroscopy, to investigate the formation of complexes between the salts and the nylon 4 polymer substrate.
