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Apatite formation on the surface of wollastonite/tricalcium phosphate composite immersed in simulated body fluid
Author(s) -
Huang Xiang,
Jiang Dongliang,
Tan Shouhong
Publication year - 2004
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.20025
Subject(s) - wollastonite , simulated body fluid , apatite , dissolution , composite number , materials science , calcium , chemical engineering , phosphate , precipitation , biomaterial , mineralogy , nuclear chemistry , chemistry , composite material , metallurgy , nanotechnology , raw material , physics , organic chemistry , meteorology , engineering
Wollastonite/tricalcium phosphate composites were prepared and immersed in SBF for various periods to investigate the apatite‐formation mechanism on their surfaces. Surface morphologies and composition before and after immersion were analyzed by SEM and EDS technologies. The concentration changes of calcium, silicon, and phosphorus in SBF due to the immersion of the samples were measured with inductively coupled plasma atomic emission spectroscopy, and the corresponding pH values in SBF were recorded. XRD and IR were used to examine the changes in crystalline phases and functional groups. It was found that, after immersion for 1 day, the samples were covered by pom‐pom–like apatite granules, resulting from the dissolution of wollastonite and the simultaneous transformation of TCP. This quickly led to the subsequent precipitation of another apatite layer, which covered the earlier‐formed surface completely. These results indicate that the wollastonite/tricalcium phosphate composite is a potential biomaterial candidate because of its high bioactivity and in situ porous structure. © 2004 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 69B: 70–72, 2004