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Proceedings Paper

Electroactive characteristics of hydrogels composed of poly(vinyl alcohol) and poly(N-isopropylacrylamide)
Author(s): Seon Jeong Kim; Sang Jun Park; Sun I. Kim; In Young Kim; Young Moo Lee; Hee Chan Kim; Taek Dong Chung
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Paper Abstract

Hydrogels composed of poly(vinyl alcohol) (PVA) and poly(N-isopropylacrylamide) (PNIPAAm) was prepared by the sequential-interpenetrating polymer network (IPN) method. The equilibrium swelling ratio and bending behavior under electric fields of the IPN hydrogel were measured in aqueous NaCl solution. The IPN exhibited a high equilibrium swelling ratio, in the range 280~380%. When the IPN in aqueous NaCl solution is subjected to an electric field, the IPN showed significant and quick bending toward the cathode. The IPN hydrogel also showed stepwise bending behavior depending on the electric stimulus. In addition, ionic conductivity of the IPN hydrogel was measured using dielectric analysis (DEA). The ionic conductive behavior of IPN hydrogel follows the Arrhenius equation. The conductivity of IPN hydrogel and the activation energy for the form of the IPN were 1.68 ×10-5 S/cm at 36 °C and 61.0 kJ/mol, respectively.

Paper Details

Date Published: 24 April 2003
PDF: 9 pages
Proc. SPIE 5116, Smart Sensors, Actuators, and MEMS, (24 April 2003); doi: 10.1117/12.498713
Show Author Affiliations
Seon Jeong Kim, Hanyang Univ. (South Korea)
Sang Jun Park, Hanyang Univ. (South Korea)
Sun I. Kim, Hanyang Univ. (South Korea)
In Young Kim, Hanyang Univ. (South Korea)
Young Moo Lee, Hanyang Univ. (South Korea)
Hee Chan Kim, Seoul National Univ. (South Korea)
Taek Dong Chung, Sungshin Women's Univ. (South Korea)

Published in SPIE Proceedings Vol. 5116:
Smart Sensors, Actuators, and MEMS
Jung-Chih Chiao; Vijay K. Varadan; Carles Cané, Editor(s)

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