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Citation: LIU Ming-Zhu, CAO Li-Xin. Preparation of a Superabsorbent Resistant to Saline Solution by Copolymerization of Acrylic Acid with Sodium Polymannuronate[J]. Chinese Journal of Applied Chemistry, ;2002, 19(5): 455-458. shu

Preparation of a Superabsorbent Resistant to Saline Solution by Copolymerization of Acrylic Acid with Sodium Polymannuronate

LIU Ming-Zhu ^, ,
CAO Li-Xin

1.
State key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000

Corresponding author: LIU Ming-Zhu,
Received Date: 20 August 2001
Available Online: 4 February 2002
Fund Project: 兰州大学博士科研启动基金资助项目(518-870881) (518-870881)

A superabsorbent resistant to saline solution was prepared from copolymer of sodium acrylate with sodium polymannuronate. The effects of the amount of sodium polymannuronate and initiator, degree of neutralization of acrylic acid, mole ratio of KOH to Na₂CO₃ on water absorbency(WA) and the hydrogel modulus of the copolymer were investigated. The results showed that WA of the superabsorbent was about 1 000 and 85 times its own mass respectively, if the superabsorbent was allowed to swell in distilled water and 0.9%(mass fraction) aqueous NaCl at room temperature for 30 min. The superabsorbent also had excellent hydrogel modulus.
- superabsorbent,
- preparation,
- poly(sodium acrylate-co-sodium polymannuronate)
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