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- W1994036898 abstract "The properties of polyelectrolyte complexes (PEC) and PEC membranes were investigated in the systems of glycol chitosan (GC)–poly(vinyl sulfate) (PVSK) and methyl glycol chitosan (MGC)–(carboxymethyl)dextran (CMD). The degree of dissociation and the conformation of GC and CMD depend upon pH, because GC and CMD are weak polybase and weak polyacid, respectively. On the basis of this knowledge, a research into the pH dependence of dissociation and viscosity of GC and CMD was carried out. PEC including chitosan derivative as a constituent was synthesized at the adequate pH, pH 3.0 in the GC–PVSK system and pH 7.0 in the MGC–CMD system. PEC membranes were prepared, and the permeability of KCl, urea, and sucrose through the GC–PVSK membrane was determined under various pH. It was revealed that the permeability of KCl, urea, and sucrose varies with the solution pH. The permeability in the neutral region was 2–10 times as high as that in acidic region. The increase of permeability in neutral region was considered from IR spectra of membranes to be due to swelling caused by a conformational change." @default.
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- W1994036898 date "1988-08-01" @default.
- W1994036898 modified "2023-09-25" @default.
- W1994036898 title "Permeability Control of Polyelectrolyte Complex Membrane Including Chitosan Derivative as a Component" @default.
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- W1994036898 doi "https://doi.org/10.1246/bcsj.61.2943" @default.
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