Piezoelectric properties of synthetic hydroxyapatite-based organic-inorganic hydrated materials

• Main Authors: Rogelio Rodriguez, Domingo Rangel, Gerardo Fonseca, Maykel Gonzalez, Susana Vargas
• Format: Article
• Language: English
• Published: Elsevier 2016-01-01
• Series: Results in Physics
• Online Access: http://www.sciencedirect.com/science/article/pii/S2211379716301723

Disks of synthetic hydroxyapatite agglutinated with a synthetic polymer and hydrated in a moisture fog, were prepared. A well-defined piezoelectric signal of these samples was obtained when a relative small compression stress of 35 MPa (corresponding a force of 450 daN) was applied; piezoelectric signals of up to 12 mV were obtained with this stress. Two different compression methods were followed to obtain the piezoelectric signal: (a) hold method, where the load was maintained constant once it reaches the maximum stress and (b) release method, where the load was removed rapidly when the stress reaches its maximum value. The samples were characterized using the techniques: X-ray Diffraction, Dielectric Relaxation Spectroscopy and mechanical test. Keywords: Piezoelectric voltage, Synthetic hydroxyapatite, Mechanical properties, Agglutinating resin, X-ray Diffraction, Dielectric properties