Summary
The membrane performance of the polycondensates derived from 2,5-pyridinedicarboxylic acid chloride and malonyl dihydrazide was studied in reverse osmosis. It depended on drying time, and the kind and amount of a cross-linking agent and an inorganic additive. The membrane strength generally exceeded that of a cellulose acetate membrane. The rejection difference between transition and alkali metal salts was discussed in terms of complexation and the molecular size of the additive. A potential application was suggested for the separation between the two metals through the membrane of a large rejection difference.
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References
E.Oikawa, Y.Honda and Y.Sawada, Polym. Bull. 6, 169 (1981).
H.Strathraann and A.S.Michaels, Desalination 21, 195 (1977).
E.Oikawa and H.Nozawa, Polyn. Bull., 13, 481 (1985).
H.Meyer and F.Slatten, Monatshefte Chem. 34, 520 (1913).
E.Oikawa and T.Ohsaki, Desalination 25, 187 (1978).
E.Oikawa, Y.Igarashi and S.Tsurumaki, J. Appl. Polyra. Sci. 30, 1511 (1985).
S.Manjikian and C.Allen, Office of Saline Water, Res. and Develop. Rep. No. 378 (1968).
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Oikawa, E., Jindal, K. Reverse osmotic properties of the membranes prepared from the polycondensate of 2,5-pyridinedicarboxylic acid chloride and malonyl dihydrazide. Polymer Bulletin 16, 351–357 (1986). https://doi.org/10.1007/BF00255008
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DOI: https://doi.org/10.1007/BF00255008