Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of s...Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of superabsorbents in the salt solutions decreased with increase in the ionic strength of the salt. For the same ionic strength of chloride salt solutions, the water absorbency had the following tendency: Na +>Ca 2+ >Fe 3+ ,Li +>Na +>K +, and Mg 2+ >Ca 2+ >Ba 2+ . The influences of anion valency of salts with a common cationic ion(Na +) on the water absorbency were the order of mononalent<divalent<trivalent anions.展开更多
文摘Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of superabsorbents in the salt solutions decreased with increase in the ionic strength of the salt. For the same ionic strength of chloride salt solutions, the water absorbency had the following tendency: Na +>Ca 2+ >Fe 3+ ,Li +>Na +>K +, and Mg 2+ >Ca 2+ >Ba 2+ . The influences of anion valency of salts with a common cationic ion(Na +) on the water absorbency were the order of mononalent<divalent<trivalent anions.
