Synthesis and Properties of Copolymers of Acrylic Salt and Acrylamide as Superabsorbents by Inverse Suspension Polymerization

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (5): 15-18.

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Synthesis and Properties of Copolymers of Acrylic Salt and Acrylamide as Superabsorbents by Inverse Suspension Polymerization

Tian Dating, Guo Junshi, Xie Hongquan

Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074

Received:1996-12-01 Revised:1997-06-16 Published:1997-10-10 Online:1997-10-10

Abstract

Abstract: Poly(acrylic salt-acrylamide)as superabsorbents were synthesized by means of inverse suspension polymerization, in which the suspension stabilizer was an amphiphilic copolymer of acrylic acid with its octadecyl ester. Polymerization conditions such as amount of crosslinking monomer, stabilizer, initator, comonomer, neutralization degree of acrylic acid and chain transfer agent on the water-absorbency of the absorbent were studied. The optimum absorbency of the superabsorbent obtained is 1050 mL/g and 86 mL/g in distilled water and 0.9% NaCl solution, respectively. The effect of different counter ions of PAA on the absorbency was also studied.

Key words: inverse suspension polymerization, superabsorbent, acrylic acid, acrylamide

Tian Dating, Guo Junshi, Xie Hongquan. Synthesis and Properties of Copolymers of Acrylic Salt and Acrylamide as Superabsorbents by Inverse Suspension Polymerization[J]. Chinese Journal of Applied Chemistry, 1997, 0(5): 15-18.

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Synthesis and Properties of Copolymers of Acrylic Salt and Acrylamide as Superabsorbents by Inverse Suspension Polymerization

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