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http://dx.doi.org/10.4191/KCERS.2002.39.11.1097

Preparation and Characterization of Synthetic Hydroxyapatite/Polyacrylic Acid Homogeneous Composite  

Lee, Suk-Kee (Department of Industrial Chemistry, Kyungil University)
Lee, Hyung-Dong (Department of Inorganic Materials Engineering, Kyungpook National University)
Shin, Hyo-Soon (Department of Inorganic Materials Engineering, Kyungpook National University)
Lee, Byung-Kyo (Department of Inorganic Materials Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.11, 2002 , pp. 1097-1102 More about this Journal
Abstract
Hydroxyapatite(HAp) powders were synthesized by wet-precipitation precess using $Ca(NO_3)_2{\cdot}4H_2O$ and $(NH_4)_2HPO_4$ and homogeneous composites of four type were prepared by mixing of synthetic HAp and Polyacrylic Acid(PAA). Ca/P ratio of synthetic HAps was determined using ICP analysis and the thermal property of HAp/PAA composites were investigated by TGA. Good crystalline HAp was obtained at pH 11 and $60{\circ}C$. The ratio of Ca/P in synthetic HAps was quantified in a range of 1.35~1.49, from which Ca-deficient HAp was obtained. The specific surface area of HAp/PAA composite increased with increasing the content of PAA and the weight loss of HAp/PAA composite at $800{\circ}C$ decreased in a range of 3.5~9.6% due to the degradation of PAA binder. From FT-IR analysis of HAp/PAA composite, it was confirmed that the ionic bond between
Keywords
Wet-precipitation process; Synthethic hydroxyapatite; Polyacrylic acid; Homogeneous composite; Ionic bond;
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