Summery
Volume behaviors of sodium acrylate-acrylamide-N,N′-methylene-bisacrylamide copolymer gels in various solvent mixtures were examined. The gel samples having the same composition but different overall concentrations exhibited a discontinuous volume change at an appropriate solvent composition when immersed in methanol-water and tetrahydrofuran-water mixtures, but at some different solvent compositions when immersed in dioxane-water and acetonitrile-water mixtures because of significant flucutuation of the gel polymer-solvent mixture interaction.
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Katayama, S., Takagi, C. & Akahori, Y. Discontinous volume changes of sodium acrylate-acrylamide-N,N′-methylenebisacrylamide copolymer gels in various solvent mixtures. Polymer Bulletin 30, 333–337 (1993). https://doi.org/10.1007/BF00343069
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DOI: https://doi.org/10.1007/BF00343069