Study of temperature dependent polarization behavior of cellulose

초록

We studied dielectric and polarization behaviors of piezoelectric cellulose EAPap to understand the detail material behavior. It was shown that the dielectric and the polarization behavior of EAPap were temperature dependent. The largest change of dielectric constant was observed at near 0 °C while the highest dielectric constant was obtained near the boiling point of water molecules, which might be related to dipolar behavior of hydroxyl structure of cellulose and adsorbed or existing internal water molecules in EAPap. The maximum current from polarization behavior of cellulose EAPap was observed near the temperature range of 105-110 °C. Also abnormal polarization of EAPap, observed in electret polymer, under different field strengths was explained. © 2009 SPIE.