Preparation and swelling properties of poly(potassium acrylate-co- acrylamide) superabsorbent particles

Sohn Ohgon, Jun Sim Sang, Hyun Lee Dong, Kwan Lee Young, Ji Heung Kim, Dukjoon Kim

Research output: Contribution to journalArticlepeer-review


Superabsorbent poly(potassium acrylate-co-acrylamide)s were synthesized in particle form using inverse suspension polymerization technique. Mean diameter of the prepared polymer particles decreased from 300 to 50 μm with increasing surfactant concentration. The dynamic and equilibrium swelling behaviors during water absorption and drying process were investigated by weight measurement. The swelling ratio of polymer particles in water changed according to not only polymer crosslinking density, but particle size, saline concentration of aqueous medium, and copolymer compositions. Water sorption amount was increased with decreasing particle size, crosslinking agent concentration, and ion concentration in bulk solution. Being different from the water sorption process, the drying process was not significantly affected by particle size, polymer composition, or crosslinking amount.

Original languageEnglish
Pages (from-to)18-23
Number of pages6
JournalPolymer (Korea)
Issue number1
Publication statusPublished - 2004 Jan
Externally publishedYes


  • Crosslinking
  • Drying
  • Particle
  • Superabsorbent polymers
  • Swelling

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry


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