Polymer Bulletin

, 67:1285 | Cite as

Preparation of superabsorbent hydrogels from poly(aspartic acid) by chemical crosslinking

Original Paper

Abstract

Modified poly(aspartic acid)s containing pendant allyl groups were synthesized by the reaction of poly(succinimide) with an allyl amine in dimethylformamide. The contents of the allyl groups in the poly(aspartic acid) ranged from 2 to 17.4% confirmed by 1H NMR. Hydrogels were prepared using modified poly(aspartic acid) by chemical crosslinking using redox radical initiators including ammonium persulfate and potassium peroxodisulfate. The morphologies of the poly(aspartic acid)-based hydrogels were investigated by scanning electron microscopy (SEM). The water-absorbent experiments were carried out, and revealed that lightly cross-linked hydrogels resulted in effective water-absorbent properties. These results suggested that allyl group-modified poly(aspartic acid)s are useful in providing biodegradable hydrogels.

Keywords

Redox radical initiation Cross-linking Poly(aspartic acid) Water-absorbent Hydrogels 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Asahikawa National College of TechnologyAsahikawaJapan
  2. 2.Division of Biochemistry and Macromolecular Chemistry, Faculty of EngineeringHokkaido UniversitySapporoJapan

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