Piezo and Dielectric Properties of PHB-PZT Composite

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Malmonge, J. A. [UNESP]
Malmonge, L. F. [UNESP]
Fuzari, G. C. [UNESP]
Malmonge, S. M.
Sakamoto, W. K. [UNESP]
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John Wiley & Sons Inc
Flexible piezoelectric composite films made of poly(3-hydroxybutyrate) (PHB) in powder form and lead zirconate titanate (PZT) ceramic powder were obtained by mixing both powders and pressing at 180 degrees 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 alpha-relaxation 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. POLYM. COMPOS., 30:13331337, 2009. (C) 2008 Society of Plastics Engineers
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Polymer Composites. Hoboken: John Wiley & Sons Inc, v. 30, n. 9, p. 1333-1337, 2009.