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PREPARATION OF SUPERABSORBENT RESISTANT TO SALINE SOLUTION AND STUDY ON ITS PROPERTIES

Zhenbin Chen

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Abstract

A superabsorbent resistant to saline solution was prepared from copolymer of acrylic acid with 2-acrylamide-2-methyl propyl sulfonic acid (AMPS) by solution polymerzation. The effects of the amount of crosslinker and initiator, mole ratio of AMPS to acrylic acid (AA) , degree of neutralization of AA and AMPS, concentration of AMPS ,temperature of reaction on water absorbency (WA) and the hydrogel modulus were investigated. The results show that WA of the superabsorbent is about 1350 and 150 in distilled water and 0.9%NaCl solution for 30 min. The superabsorbent also has an excellent hydrogel modulus.

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What this paper is about

A superabsorbent resistant to saline solution was prepared from copolymer of acrylic acid with 2-acrylamide-2-methyl propyl sulfonic acid (AMPS) by solution polymerzation. The effects of the amount of crosslinker and initiator, mole ratio of AMPS to acrylic acid (AA) , degree of neutralization of AA and AMPS, concentration of AMPS ,temperature of reaction on water absorbency (WA) and the hydrogel modulus were investigated. The results show that WA of the superabsorbent is about 1350 and 150 in distilled water and 0.9%NaCl solution for 30 min. The superabsorbent also has an excellent hydrogel modulus.

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Available abstract

A superabsorbent resistant to saline solution was prepared from copolymer of acrylic acid with 2-acrylamide-2-methyl propyl sulfonic acid (AMPS) by solution polymerzation. The effects of the amount of crosslinker and initiator, mole ratio of AMPS to acrylic acid (AA) , degree of neutralization of AA and AMPS, concentration of AMPS ,temperature of reaction on water absorbency (WA) and the hydrogel modulus were investigated. The results show that WA of the superabsorbent is about 1350 and 150 in distilled water and 0.9%NaCl solution for 30 min. The superabsorbent also has an excellent hydrogel modulus.

Key concepts: Distilled water, Superabsorbent polymer, Acrylic acid, Acrylamide, Sulfonic acid, Copolymer, Materials science, Polymer chemistry

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