Paper Title:
Morphology and Mechanical Properties of Injectable Ceramic Microspheres
  Abstract

The aim of this study was to analyze the effect of starting powder granulometry and sintering conditions on the morphological structure and mechanical properties of injectable hydroxyapaptite (HAp) microspheres. The mechanical properties of the microspheres were evaluated, to investigate if their integrity could be maintained during the injection process. To obtain microspheres, HAp powders were dispersed in a sodium alginate solution and spherical particles were prepared by droplet extrusion under a co-axial air stream, coupled with ionotropic gelation in the presence of Ca2+. This was followed by a sintering process at various temperatures and times. The morphology of microspheres was observed under SEM, diameter measurements were performed in an optical microscope and the compression strength was evaluated using a texture analyzer. Finally, microspheres prepared using lower granulometry HAp powders and sintered at 1200 °C for 1 hour presented the best properties and were selected as the most suitable for the envisaged application.

  Info
Periodical
Key Engineering Materials (Volumes 396-398)
Main Theme
Edited by
Marcelo Prado and Cecília Zavaglia
Pages
691-694
DOI
10.4028/www.scientific.net/KEM.396-398.691
Citation
S.M. Oliveira, C.C. Barrias, C.C. Ribeiro, I.F. Almeida, M.F. Bahia, M. A. Barbosa, "Morphology and Mechanical Properties of Injectable Ceramic Microspheres", Key Engineering Materials, Vols. 396-398, pp. 691-694, 2009
Online since
October 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Khiam Aik Khor, Yong Wan Gu, P. Cheang, F.Y.C. Boey
497
Authors: C.C. Barrias, C.C. Ribeiro, Daniel Rodrigues, M.C. Sá Miranda, Mario A. Barbosa
Abstract:In this study, the addition of calcium phosphate powders to an alginate matrix was evaluated as a strategy to modulate enzyme...
689
Authors: Yin Zhang, Yoshiyuki Yokogawa, Tetsuya Kameyama
Abstract:Biphasic calcium phosphate (BCP) ceramics, a mixture of hydroxyapatite (HAp) and betatricalcium phosphate (β-TCP), of varying HAp/β-TCP...
1688
Authors: Y. Zhang, Yoshiyuki Yokogawa, Tetsuya Kameyama
Abstract:Biphasic calcium phosphate (BCP) ceramics, a mixture of hydroxyapatite (HAp) and beta-tricalcium phosphate (β-TCP), of varying HAp/β-TCP...
91
Authors: Takuro Adegawa, Yoshimi Ohyabu, Toshimasa Uemura, Tomohiko Yoshioka, Kazuo Shinozaki, M. Tanaka
Abstract:Porous scaffolds, consisted of hydroxyapatite (HAp), chondroitinsulfate (ChS) and collagen, were prepared by freeze-drying technique. HAp/ChS...
707