Paper Title:
Effects of Acidic Amino Acids on Hydroxyapatite Morphology
  Abstract

Hydroxyapatite nanoparticles were synthesized in the presence of two kinds of acidic amino acids in order to investigate the effects of acidic amino acids on the morphology of hydroxyapatite obtained by homogeneous precipitation and hydrothermal treating. The results of X-ray diffraction analysis and microphotographs of transmission electron microscope showed that the morphology of hydroxyapatite nanoparticles changed significantly only with aspartic acid. Hydroxyapatite synthesized with aspartic acid showed smooth flake-like morphology at pH= 11 and flake-like morphology with stripes at pH= 8. However, hydroxyapatite synthesized in the present of glutamic acid showed rod-like morphology at both pH values. Variation in the morphology of nanoparticles could be consistent with the difference in the affinity of amino acids binding at the hydroxyapatite crystal surface. The adsorption process was revealed by computer simulation of molecular mechanics using energy minimizing method.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2096-2099
DOI
10.4028/www.scientific.net/KEM.336-338.2096
Citation
W. M. Gao, C. X. Ruan, Y. F. Chen, "Effects of Acidic Amino Acids on Hydroxyapatite Morphology", Key Engineering Materials, Vols. 336-338, pp. 2096-2099, 2007
Online since
April 2007
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: Xiao Feng Xing, Liang Liang Luo, Yu Ping Guo, Wei Min Gao, Liang Hu
Chapter 1: Technologies of Processing and Manufacturing
Abstract:The spherical hydroxyapatite nanoparticles (HAP) were synthesized by hydro-thermal method, and calcium nitrate, terbium oxide, diammonium...
62
Authors: Juliana do Nascimento Lunz, Karla Patricia Macedo Licona, Alexandre Antunes Ribeiro, José Angel Delgado, Lizette Morejón, Marize Varella de Oliveira
Chapter 9: Materials and Technologies in Biomedical Engineering
Abstract:Nanosized hydroxyapatite (HA) with crystallinity and composition similar to bone apatite has been widely investigated in the last years, due...
969