Electromechanical properties of hydrogels based on chitosan and poly(hydroxyethyl methacrylate) in NaCl solution
Seon Jeong Kim; Su Ryon Shin; Sang Min Lee; In Young Kim; Sun I Kim; Seon Jeong Kim; Department of Biomedical Engineering, Hanyang University, Seoul 133-605, Korea; Su Ryon Shin; Department of Biomedical Engineering, Hanyang University, Seoul 133-605, Korea; Sang Min Lee; Department of Biomedical Engineering, Hanyang University, Seoul 133-605, Korea; In Young Kim; Department of Biomedical Engineering, Hanyang University, Seoul 133-605, Korea; Sun I Kim; Department of Biomedical Engineering, Hanyang University, Seoul 133-605, Korea
Журнал:
Smart Materials and Structures
Дата:
2004-10-01
Аннотация:
A semi-interpenetrating polymer network (semi-IPN) hydrogel, composed of chitosan and poly(hydroxyethyl methacrylate) (PHEMA), exhibited electrically sensitive behavior. The swelling behavior of the chitosan/PHEMA semi-IPN hydrogel was studied by immersion of the gel in aqueous NaCl solutions at various concentrations. The stimulus response of the chitosan/PHEMA semi-IPN hydrogel in electric fields was also investigated. When swollen, the semi-IPN was placed between a pair of electrodes, and showed bending behavior upon the application of an electric field. The electro-responsive behavior of the present semi-IPN was also affected by the electrolyte concentration of the external solution, and also showed various degrees of increased bending behavior depending on the electrical stimulus.
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