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Studies of crosslinked poly(AM-MSAS-AA) gels. II. Effects of polymerization conditions on the water absorbency

✍ Scribed by Wen-Jing Zhou; Ke-Jun Yao; Mark J. Kurth

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 158 KB
Volume: 64
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970502)64:5<1009::aid-app19>3.0.co;2-z

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✦ Synopsis

Hydrogels with varying crosslinking ratio and ionic content were prepared by copolymerization of acrylamide (AM), sodium methallylsulfonate (MSAS), sodium acrylate (AA), and N,N-methylenebisacrylamide (BisA) in aqueous solution using potassium persulfate (KPS)/N,N,N,N-tetramethylethylenediamine (TMEDA) as initiator. The influences of synthetic variables (reaction time, crosslinker concentration, monomer concentration, initiator concentration, temperature, and pH) on the polymerization conversion ( y %) and water absorbency ( Q) were studied in detail. These gels, which absorbed about 125 times their own weight in distilled water, have potential application as water superabsorbents.

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