Formation of organically modified octacalcium phosphate in solutions containing various amounts of benzenedicarboxylic acids
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- YOKOI Taishi
- Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University
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- KAMITAKAHARA Masanobu
- Graduate School of Environmental Studies, Tohoku University
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- KAWASHITA Masakazu
- Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University
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- OHTSUKI Chikara
- Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University
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Abstract
Octacalcium phosphate (OCP) has a layered structure composed of apatitic and hydrated layers. HPO42− in the hydrated layer can be substituted by dicarboxylate ions. We investigated formation of OCP with incorporated dicarboxylate ions, namely octacalcium phosphate carboxylate (OCPC), under synthetic conditions with various concentrations of benzenedicarboxylic acids (BDCAs) such as 1,2-benzenedicarboxylic acid (1,2BDCA, phthalic acid), 1,3-benzenedicarboxylic acid (1,3BDCA, isophthalic acid), and 1,4-benzenedicarboxylic acid (1,4BDCA, terephthalic acid). 1,3BDCA or a small amount of 1,2BDCA could be incorporated into OCP, but 1,4BDCA could not be incorporated into OCP. When the added amount of 1,3BDCA was larger than 2 mmol, OCPC with 1,3BDCA (1,3BDCA-OCPC) was formed with dicarboxylate-free OCP (Pure-OCP). The fractions of 1,3BDCA-OCPC with respect to Pure-OCP increased with increasing amounts of 1,3BDCA. When excessive amounts of 1,3BDCA, namely 25 times with respect to the stoichiometric composition of OCPC, were used for formation of OCPC, 1,3BDCA-OCPC was formed as a single phase. Addition of excessive amounts of 1,3BDCA prevented formation of Pure-OCP and had an advantage in formation of 1,3BDCA-OCPC.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 121 (1410), 219-225, 2013
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680264697344
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- NII Article ID
- 130004950812
- 40019560095
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 024223684
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed