Preparation and Characterization of HAP-Glass Porous Composites
Charussri Lorprayoon* and Shigeki Morimoto* Author for corresponding; e-mail address: char@ccs.sut.ac.th / shigeki@ccs.sut.ac.th
Volume: Vol.32 No.3 (SEPTEMBER 2005)
Research Article
DOI:
Received: -, Revised: -, Accepted: -, Published: -
Citation: Lorprayoon C.. and Morimoto S.., Preparation and Characterization of HAP-Glass Porous Composites, Chiang Mai Journal of Science, 2005; 32(3): 495-500.
Abstract
The aim of this study was to prepare a porous biocomposite material for bone defect replacement. Hydroxyapatite (HAP), a bioactive and biocompatible powder, was mixed with phase-separable borosilicate glass containing calcium oxide. Calcium carbonate was added as a foaming agent. The composite specimens were made by mixing, pressing and sintering. Phase separation of the glassy phase was controlled by heat treatment. Thereafter, the specimens were acid-leached and characterized in terms of phase, pore size and pore structure by means of x-ray diffractometry (XRD), scanning electron microscopy (SEM) and mercury porosimetry. The evaluations were performed both before and after acid leaching. The results showed that HAP-glass porous composites containing a HAP phase and a minor amount of the second phase and having an interconnected pore structure could be prepared.