NDLI: Freeze-drying synthesis, characterization and in vitro bioactivity of chitosan/graphene oxide/hydroxyapatite nanocomposite

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RSC Advances Vol - 4 Issue - 39

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RSC Advances Vol - 4 Issue - 19

Freeze-drying synthesis, characterization and in vitro bioactivity of chitosan/graphene oxide/hydroxyapatite nanocomposite

Content Provider	Royal Society of Chemistry (RSC)
Author	Mohandes, F. Salavati-Niasari, M.
Copyright Year	2014
Abstract	Polycrystalline and dispersed hydroxyapatite (HAP) nanoparticles were successfully prepared via a simple precipitation method with the aid of a new capping agent based on Schiff base compounds. After that, a composite of chitosan (CT), graphene oxide (GO) and HAP nanoparticles was synthesized by a freeze-drying method. The as-produced Schiff base, HAP nanoparticles, and CT/GO/HAP nanocomposite were analysed by several techniques including FTIR, SEM, HR-TEM, and XRD. In addition, the in vitro bioactivity of HAP nanoparticles and the CT/GO/HAP nanocomposite was evaluated by soaking them in simulated body fluid (SBF). By monitoring the changes of chemical composition of the SBF solutions, it was concluded that more Ca and P ions were released from the CT/GO/HAP nanocomposite compared to the pure HAP nanoparticles, indicating a high bioactivity of the nanocomposite. The SEM images showed that the formation and growth of apatite on the surfaces of the products increased after immersion for 14 days in SBF.
Starting Page	25993
Ending Page	26001
Page Count	9
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	4
Issue Number	49
Journal	RSC Advances
DOI	10.1039/c4ra03534h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Schiff base X-ray crystallography Simulated body fluid Graphene FTIR Schiff Hydroxylapatite Apatite SEM Nanocomposite Chitosan Freeze-drying
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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