Síntese de hidroxiapatita pura por combustão de solução

Abstract

Biomaterials, are those that interface with biological systems to treat or replace body tissues, among other functions. Biocompatible ceramics are included in this category, which have special importance in the areas of orthopedics and dentistry. One of the most widespread is Hydroxyapatite (HAp), due to its excellent characteristics of osteointegration, osteoinduction and osteoconduction, essential when it comes to bone substitutes. The objective in this study was the synthesis and characterization of pure HAp powders, with nanometric particles, through the solution combustion method, evaluating the influence of some parameters on the final product. Among 37 samples obtained, and characterized by the XRD and SEM techniques, those obtained from solutions with pH 1 and 3, calcined in ceramic containers at 600 and 900ºC, had the best results. Contrary to the initial interest of this study, the synthesized powders were composed of three calcium phosphates' phases (HAp + β-TCP + α-TCP), thus being verified the need to improvement of the synthesis conditions to obtain pure HAp.