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Apatite Converted from 3‐D Ordered Macroporous Sol–Gel Bioactive Glass (3DOM‐BG) Particles
Author(s) -
Zhang Kai,
Francis Lorraine F.,
Yan Hongwei,
Stein Andreas
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00143.x
Subject(s) - apatite , dissolution , sol gel , chemical engineering , materials science , simulated body fluid , phase (matter) , fourier transform infrared spectroscopy , calcium carbonate , mineralogy , phosphate , bioactive glass , carbonate , chemistry , composite material , organic chemistry , nanotechnology , metallurgy , engineering
3‐D ordered macroporous sol–gel bioactive glass particles (3DOM‐BG, pore size: 345 nm; molar composition: 75 SiO 2 –21 CaO–4 P 2 O 5 ) were converted into nano‐crystalline calcium‐deficient carbonate apatite after soaking at 37°C in simulated body fluid. The as‐formed, flake‐like apatite transformed into a coral‐like, highly crystalline hydroxyapatite with a minor tri‐calcium phosphate phase after heating for 1 h at a temperature of 700°C. Fourier transform infrared results show the loss of carbonate and isolation of hydroxyl during heating. The heat treatment improved the apatite's resistance to dissolution in a buffer solution (pH=5).