Journal of Materials Science

, Volume 43, Issue 17, pp 5884–5890 | Cite as

Two-step synthesis of polyacrylamide/polyacrylate interpenetrating network hydrogels and its swelling/deswelling properties

  • Qunwei Tang
  • Jihuai WuEmail author
  • Jianming Lin
  • Qinghua Li
  • Shijun Fan


A two-step polymerization technique is introduced to synthesize polyacrylamide/polyacrylate interpenetrating network (PAM/PAC IPN) hydrogels. The swelling ratio of the IPN hydrogel increases with the increase of the PAC content in PAM/PAC, and is smaller than the traditional PAM or PAC superabsorbents. A non-Fickian mechanism is observed in the swelling process, and the swelling changes from non-Fickian mechanism to Fickian mechanism with the increase of polyacrylate dosage in the hydrogel. The IPN hydrogel has typical pH-sensitivity and on–off effect. The deswelling properties and methyl orange dye removal are carried out based on the chelation of the carboxylic/carboxylate groups on the hydrogels with multivalent cations in solution. The hydrogel is expected to be used in the removal of heavy metal ions and dyes.


Methyl Orange Multivalent Cation Swell Hydrogel Superabsorbent Polymer Neutralization Degree 



The authors thank for joint support by the National Natural Science Foundation of China (No. 50572030 and No. 50372022) and the Key Scientific Technology Program of Fujian, China (No. 2005HZ01-4 and No. 2004HZ01-3).


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Qunwei Tang
    • 1
  • Jihuai Wu
    • 1
    Email author
  • Jianming Lin
    • 1
  • Qinghua Li
    • 1
  • Shijun Fan
    • 1
  1. 1.The Key Laboratory for Functional Materials of Fujian Higher Education, Institute of Material Physical ChemistryHuaqiao UniversityQuanzhouChina

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