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Synthesis of nanoporous calcium phosphate spheres using poly(acrylic acid) as a structuring unit
- Authors
- Wang, Peng; Yook, Se-Won; Jun, Shin-Hee; Li, Yuan-Long; Kim, Miyoung; Kim, Hyoun-Ee; Koh, Young-Hag
- Issue Date
- 31-5월-2009
- Publisher
- ELSEVIER
- Keywords
- Ceramics; Powder technology; Calcium phosphate spheres; Poly(acrylic acid)
- Citation
- MATERIALS LETTERS, v.63, no.13-14, pp.1207 - 1209
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS LETTERS
- Volume
- 63
- Number
- 13-14
- Start Page
- 1207
- End Page
- 1209
- ISSN
- 0167-577X
- Abstract
- Calcium phosphate (CaP) spheres with nanopores were synthesized using poly(acrylic acid) (PAA) as the structuring unit. In this method, colloidal droplets of the PAA/Ca2+ complex were prepared by adding a Ca(NO3)(2) solution to a PAA aqueous solution and then mixed with an (NH4)(2)HPO4 solution, which allowed the nucleation and growth of CaP nanocrystals in the PAA matrix. Thereafter, the as-synthesized PAA/CaP spheres were heat-treated at 550 degrees C for 3 h to remove the PAA phase, followed by treatment in ammonium nitrate solution to remove the CaO phase formed as an impurity. The prepared Cap spheres showed a narrow size distribution with an average diameter of 146 +/- 43 nm and nanopores formed via the removal of the CaO phase. (C) 2009 Elsevier B.V. All rights reserved.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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