| These superabsorbents were prepared with acrylic acid, polyvinyl alcohol, 2-acrylamido-2-methylpropanesulfonic acid(AMPS), bentonited and starch by aqueous solution- microwave method: 2-acrylamido-2-methylpropane sulfonic acid/acrylic acid/polyvinyl alcohol, bentonite/acrylic acid/polyvinyl alcohol, starch/acrylic acid/polyvinyl alcohol. The three superabsorbents were 2-acrylamido-2-methylpropane sulfonic acid/acrylic acid/polyvinyl alcohol, bentonite/acrylic acid/polyvinyl alcohol, starch/acrylic acid/polyvinyl alcohol, respectively.The absorbencies of resin made from AMPS/acrylic acid/polyvinyl alcohol was 960 g/g in distilled water and was 118 g/g in physiological salt solution, in univalent saline solution was NaCl> KI> KCl. The absorbencies were different in different pH values: 3 |
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