Desenvolvimento e caracterização de biocompósito com propriedades piezomagnéticas.

Abstract

The trauma on the body parts can bring many consequences, among them, multiple fractures of the bones. The treatment may be since surgery until a therapy. Among the therapies, there is the Pulsed Magnetic Therapy (PMT) that uses electricity to run a series of magnetic pulses through injured tissue, where each magnetic pulse induces an electrical signal that stimulates cellular repair. The objective of this study was to develop a biocomposite with piezomagnetics characteristics, so, samples were prepared using cobalt ferrite (CoFe204) due it piezomagneticas properties, and hydroxyapatite bioceramic (HA) for their biological properties contribute to bone regeneration. The samples were submitted to characterizations of X-Ray Diffraction (XRD), spectroscopy in the Region of Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy X-ray (EDX) and Sample Magnetometer Vibrant (MAV). This work was performed in two steps. On the first, to obtain an optimum work temperature was used a composition of 20/80 (CoFe204/HA) and where it was shown that the composite has changed between 600 0 C and 700 0 C and ensure a work temperature in 650°C. In the second step the compositions used were 2/98 (CoFe204/HA) and 3/97 (CoFe204/HA) and a temperature of 650 ° C and it was observed that they have retained the characteristics regarding the crystal structures seen in the first stage, and that the electromagnetic properties and crystallinity of the composite did not change. Based on the results, we conclude that the cobalt ferrite (CoFe204) increased the crystallinity of the composite which also interfered in the morphology of the sample, this increase is in favor because in studies on hypertension in relation to their properties was proven that the porous shapes have a higher degree of degradation over time. The operating conditions for obtaining the samples and their thermal treatments were effective and did not affect the electromagnetic properties in cobalt ferrite composite with hydroxyapatite