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Preparation of Beta‐Tricalcium Phosphate Powder Substituted with Na/Mg Ions by Polymerized Complex Method
Author(s) -
Matsumoto Naoyuki,
Yoshida Katsumi,
Hashimoto Kazuaki,
Toda Yoshitomo
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03959.x
Subject(s) - metal ions in aqueous solution , crystallization , ion , stoichiometry , chemistry , chelation , inorganic chemistry , metal , qualitative inorganic analysis , polymerization , dehydration , nuclear chemistry , phosphate , organic chemistry , biochemistry , polymer
Beta‐tricalcium phosphate (β‐TCP) powder doped with metal (Na + or Mg 2+ ) ions was prepared using a novel polymerized complex method that involves a reaction between metal ions and an organophosphorus chelating agent [(2‐phosphonobutane‐1.2.4‐tricarboxylic acid (PBTA)]. The precursors were uniformly gelled by the chelation and dehydration condensation of the carboxyl groups and phosphonic acid groups in PBTA, and metal (Ca 2+ , Na + , and Mg 2+ ) ions. When precursors with/without Na + ions were used, the β‐TCP phase crystallized through the α‐TCP phase, whereas when precursors containing Mg 2+ ions were used, it crystallized directly. The crystallization temperature of the β‐TCP phase from the precursors decreased with the addition of Na + and Mg 2+ ions. The lattice constants of each sample after heating the precursors at 1000°C were almost the same as those of β‐TCP powder doped with metal ions via a solid‐state reaction. The synthesized samples also had a stoichiometric composition. Heating the precursors above 550°C resulted in a unique chain structure, which remained unchanged even after the addition of Na + and Mg 2+ ions. However, at the same heating temperature, the particle size of the samples increased with the addition of Na + ions, but decreased with the addition of Mg 2+ ions.