Hydrothermal treatment of Alpha tricalcium phosphate porous ceramics in various aqueous solutions

Masanobu Kamitakahara, Koji Loku, Giichiro Kawachi, Chikara Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Porous ceramics consisting of hydroxyapatite (HA) are useful scaffolds for hone regeneration. Their pore structures can he designed by the size and morphology of the HA particles which construct the porous ceramics. We previously reported that the hydrothermal treatment of alpha tricalcium phosphate (a-TCP) porous ceramics produced porous ceramics consisting of rod-shaped HA crystals. The purpose of this study is to investigate the effects of kinds of solutions for the hydrothermal treatment of the a-TCP porous ceramics. The a-TCP porous ceramics were hydrothermally treated with various aqueous solutions containing NaCl, CaCl2, Na3P0 4, Na2HP04, NaH2P04, or H3P04 at 150 C for 10 h. The a-TCP phase was transformed into HA by the hydrothermal treatment in ultrapure water. NaCI, CaCl 2, Na3PO4 or Na2HPOA solutions. to form porous ceramics consisting of rod-shaped HA particles. The size of the rod-shaped HA particles formed in NaiPOJ or Na2HP04 solutions was smaller than that formed in ultrapure water, NaCI. or CaCl2 solutions. When the NaCl or CaCl2 solutions were used, chloride ions were incorporated into HA. The α-TCP phase of the porous ceramics was transformed into a hiphase consisting of HA and monetite (DCPA) after treatment in NaH2P04 solution, and into DCPA in the H3P04 solution. resulting in porous ceramics consisting of plate-shaped particles. The solutions used for the hydrothermal treatment governed the resultant pore structures of the HA porous ceramics.

Original languageEnglish
Title of host publicationAdvances in Bioceramics and Porous Ceramics - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008
Pages103-112
Number of pages10
Edition7
Publication statusPublished - 2009 Dec 1
EventAdvances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008 - Daytona Beach, FL, United States
Duration: 2008 Jan 272008 Feb 1

Publication series

NameCeramic Engineering and Science Proceedings
Number7
Volume29
ISSN (Print)0196-6219

Other

OtherAdvances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008
CountryUnited States
CityDaytona Beach, FL
Period08/1/2708/2/1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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