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J. Korean Ceram. Soc. > Volume 45(10); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(10): 573.
doi: https://doi.org/10.4191/kcers.2008.45.1.573
Modification of Hydroxyapatite/gelatin Nanocomposite with the Addition of Chondroitin Sulfate
Myung-Chul Chang
Department of Materials Science & Engineering, Kunsan National University
ABSTRACT
In the preparation of hydroxyapatite(HAp)/gelatin(GEL) nanocomposite, GEL matrix was modified by the introduction of chondroitin sulfate(ChS) to obtain a strongly organized composite body. The formation reaction of the HAp/GEL-ChS nanocomposite was then investigated via XRD, DT/TGA, FT-IR, TEM and SEM. The organic-inorganic interaction between HAp nanocrystallites and GEL molecules was confirmed from DT/TGA and FT-IR. According to the DT/TGA results, the exothermal temperature zone between 300 and $550^{circ}C$ showed an additional peak temperature that indicated the decomposition of the combined organics of the GEL and ChS. From the FT-IR analysis, calcium phosphate(Ca-P) was covalently bound with the GEL macromolecules modified by ChS. From TEM and ED, the matrix of the GEL-ChS molecules was mineralized by HAp nanocrystallites and the dense dried nanocomposite body was confirmed from SEM micrographs.
Key words: Hydroxyapatite-gelatin nanocomposite, Chondroitin sulfate, Modification, Organic-inorganic interaction
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