Electrical Behavior of Chitosan and Poly(hydroxyethyl methacrylate) Hydrogel in the Contact System

Seon Jeong Kim, Han Il Kim, Su Ryon Shin, Sun I. Kim

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Semi-interpenetrating polymer networks (semi-IPNs), as polymer hydrogels composed of chitosan and poly(hydroxyethyl methacrylate) (PHEMA), exhibiting electrical-sensitive behavior, were prepared. The swelling behavior of the chitosan/PHEMA hydrogels was studied by immersing the gels in various concentrations of aqueous NaCl solution. The electrical responses of the semi-IPN hydrogel, in applied electric fields, were also investigated. When the semi-IPN hydrogels were swollen, where one electrode was placed in contact with the gel and the other fixed 30 mm apart from one, they exhibited bending behavior on the application of an electric field on a contact system. The electroresponsive behavior of the present semi-IPN was also affected by the electrolyte concentration of the external solution. The semi-IPN also showed various degrees of increased bending behavior depending on the electric stimulus.

Original languageEnglish
Pages (from-to)915-919
Number of pages5
JournalJournal of Applied Polymer Science
Issue number2
Publication statusPublished - 2004 Apr 15



  • (Poly(hydroxyethyl methacrylate)
  • Chitosan
  • Electrical properties
  • Hydrogels
  • Interpenetrating networks

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