The effect of pH value on phase transformation of calcium phosphate cement

Hsin Chung Cheng, Kuo Tien Chu, Nai Cia Teng, Hsien Lung Tsai, Keng Liang Ou, Shih Fu Ou

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The effects of various pH values of sodium phosphate buffer solution (PBS), 4.0, 6.0, 8.0, and 9.0 on calcium phosphate cement (CPC) prepared by mixing monocalcium phosphate monohydrate (MCPM), calcium carbonate, and PBS were studied. The phase evolution takes place in three steps: Firstly, the MCPM and calcium carbonate crystals dissolve in the PBS and precipitate in the form of DCPD crystals. Then, after 12 h, DCPD begins to convert to amorphous calcium phosphate (ACP). Finally, the metastable ACP phase converts into stable CDHA. With an increase in the pH of the PBS, the CDHA content in the CPC increased.

Original languageEnglish
Pages (from-to)364-370
Number of pages7
JournalInternational Journal of Applied Ceramic Technology
Issue number2
Publication statusPublished - Mar 2014

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Ceramics and Composites
  • Materials Chemistry
  • Marketing


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