Abstract
We synthesized Polyallylamine (PAA) quaternary salt gel and examined the behavior of the swelling and the shrinkage due to the change of solvent composition, the salt concentration, pH and the temperature. It was found that PAA quaternary salt gel showed the behavior described below. A definitive discontinuous change was observed for the variation of the solvent compsition and the temperature, but for the variation of the salt concentration and pH, the change was ambiguously discontinuous. The behavior of this swelling and the shrinkage which PAA quarternary salt gel showed will offer possible applications of the macromolecule material to the sensor and the actuator.
