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Permeation properties of glycol chitosan–mucopolysaccharide complex membranes
Author(s) -
Nakajima Akio,
Shinoda Katsuro
Publication year - 1977
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1977.070210507
Subject(s) - membrane , permeation , isoelectric point , chemical engineering , chitosan , salt (chemistry) , reverse osmosis , desalination , chemistry , chromatography , osmotic pressure , polymer chemistry , polyethylene glycol , materials science , organic chemistry , biochemistry , engineering , enzyme
The permeation properties of glycol chitosan–chondroitin sulfate C and glycol chitosan–heparin complex membranes have been studied. Discussion is devoted primarily to the desalination properties in reverse osmosis. Salt rejection and flux were dependent both on the composition of the membranes and the pH of the feed solutions. The results indicate that these complexes behave like polyampholytes. Minimum salt rejection occurs around the isoelectric point. Another characteristic of these membranes is a large pressure dependence of the salt rejection. This could be interpreted by assuming the compaction of these highly swollen membranes at high pressure.