Piezo and dielectric properties of PHB-PZT composite

• Published in: Polymer composites Vol. 30; no. 9; pp. 1333 - 1337
• Main Authors: Malmonge, J.A., Malmonge, L.F., Fuzari Jr, G.C., Malmonge, S.M., Sakamoto, W.K.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.09.2009; Wiley; Blackwell Publishing Ltd
• Subjects: Applied sciences; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Polymer industry, paints, wood; Technology of polymers; Dielectric loss; Dielectric properties; Ester polymer; Temperature effect; Lead Titanates; Piezoelectric properties; Butyrate(hydroxy)polymer; Experimental study; Oxide ceramics; Piezoelectric ceramics; Composite material; Hot pressing; Aliphatic polymer; Concentration effect; Lead Zirconates; Permittivity
• ISSN: 0272-8397; 1548-0569
• DOI: 10.1002/pc.20719

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°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 α‐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., 2009. © 2008 Society of Plastics Engineers