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http://dx.doi.org/10.4191/kcers.2012.49.1.072

Modification of Hydroxyapatite-gelatin Nanocomposite using Side Group Reaction of Ca2+-RCOO-  

Chang, Myung-Chul (Department of Materials Science & Engineering, Kunsan National University)
Yang, Hae-Kwon (Department of Electrical Engineering, Kunsan National University)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.1, 2012 , pp. 72-77 More about this Journal
Abstract
In the preparation of a hydroxyapatite [HAp]/gelatin [GEL] nanocomposite, the GEL matrix in aqueous solution of $H_3PO_4$ was modified by the introduction of aspartic acid [Asp], asparagine [Asn], and glycine [Gly]. The addition of Asp, Asn and Gly greatly affected the slurry formation of HAp/GEL nanocomposite and the resulting dry body showed variations in toughness with the addition of the different amino acids. The introduction of Asn into HAp/GEL nanocomposite was effective for producing the organic-inorganic interaction between HAp and GEL, and caused the increase of toughness. The formation reaction of the modified HAP/GEL nanocomposites was investigated by using XRD and FT-IR. The organic-organic interaction between the GEL matrix and the additives of Asp, Asn and Gly was confirmed from FT-IR analysis, and the organic-inorganic interaction between HAp nanocrystallites and the modified GEL matrix was also discussed, using FT-IR spectra patterns. Nanocrystallites of HAp were covalently bound with the GEL macromolecules and differently influenced by the modification species of Asp, Asn, and Gly.
Keywords
Hydroxyapatite-gelatin nanocomposite; Aspartic acid; Asparagine; Glycine; Organic-inorganic interaction;
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