Details

Autor(en) / Beteiligte

• Wang, Peng
• Yook, Se-Won
• Jun, Shin-Hee
• Li, Yuan-Long
• Kim, Miyoung
• Kim, Hyoun-Ee
• Koh, Young-Hag

Titel

Synthesis of nanoporous calcium phosphate spheres using poly(acrylic acid) as a structuring unit

Ist Teil von

• Materials letters, 2009-05, Vol.63 (13), p.1207-1209

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2009

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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/Ca 2+ complex were prepared by adding a Ca(NO 3) 2 solution to a PAA aqueous solution and then mixed with an (NH 4) 2HPO 4 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 °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.