Piezo and Dielectric Properties of PHB-PZT Composite

摘要

Flexible piezoelectric composite films made of poly(3-hydroxybutyrate) (PHB) in powder form and lead zir-conate titanate (PZT) ceramic powder were obtained by mixing both powders and pressing at 180°C. The effect of PZT on PHB crystallization was investigated using differential scanning calorimetry (DSC). The relative dielectric constant and dielectric loss factor were analyzed by dielectric spectroscopy and the x-relaxa-tion of amorphous phase of PHB was observed. After suitable polarization, the composite film displayed piezoelectric activity indicating the possibility of using that material as a sensor.