Abstract
Piezoelectric polymer-ceramic composites are promising materials for Sensing, Wireless electronics and actuating applications. We report the fabrication of highly piezoelectric biocompatible films containing lead zirconate titanate (PZT) ferroelectric ceramic particles dispersed in poly lactic acid (PLA) with different volume fractions using a solvent cast technique. The properties of the piezoelectric polymer-ceramic films were investigated by Fourier transform infrared spectrometry (FTIR) and field emission scanning electron microscopy (FE-SEM). In the FTIR spectra appear a large number of absorption bands which are attributed to the phases from PLA matrix confirming the total embedding of PZT filler into the matrix. The SEM results showed a good distribution of fillers in the matrix. We find that the added PZT imposes a significant effect on the α–β phase transformation. Our finding can lead to extraordinary enhancement of piezoelectric properties for the PLA/PZT composite films. Keywords: Piezoelectric polymer-ceramic, PLA, PZT, solvent cast technique.
Highlights
Polylactic acid (PLA) remains the leader of electroactive polymers which are used in 43% of the scientific work in the field of recovery and conversion of electromechanical energy [1,2,3,4,5,6]
The morphological observations of poly lactic acid (PLA)/PZT composites were performed with scanning electron microscopy (SEM, SH-5000P-EDS), operating at an acceleration voltage of 15 kV
The analysis of microstructure of the 1% volume fraction PZT composite indicates the good adhesion of polymer matrix with the particles of PZT ceramic
Summary
Polylactic acid (PLA) remains the leader of electroactive polymers which are used in 43% of the scientific work in the field of recovery and conversion of electromechanical energy [1,2,3,4,5,6] This polymer has the advantage of having a better mechanical strength, thermal and ease of implementation compared to other polymers [7]. In the present work, the PLA/PZT composite were prepared using this technique with different volume fractions. These samples were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscopy (SEM). Based on the survey on crystal structures, we clarified the roles played by PZT in phase transformation
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