Please use this identifier to cite or link to this item:
Title: Physiochemical stability of chemically-modified nanoapatites sintered at different temperatures
Authors: Lim, P.N.
Tong, J.Y.E.
Thian, E.S. 
Tay, B.Y.
Chan, C.M.
Keywords: Co-substitution
Issue Date: 2011
Citation: Lim, P.N.,Tong, J.Y.E.,Thian, E.S.,Tay, B.Y.,Chan, C.M. (2011). Physiochemical stability of chemically-modified nanoapatites sintered at different temperatures. 2011 Defense Science Research Conference and Expo, DSR 2011 : -. ScholarBank@NUS Repository.
Abstract: Nanostructured apatite has been widely used as a bone substitute material due to its biological similarity to the natural bone mineral. To enhance further the biomineralisation and introduce bactericidal property into HA, co-substitution of Ag and Si has been investigated. A co-substituted nanosized apatite (Ag/Si-HA) containing Ag (0.3 wt %) and Si (0.8 wt %) was synthesized by an aqueous precipitation technique. Bone-apatite mimicking morphology of dimensions ∼50 nm in length and ∼10 nm in width was observed for the Ag/Si-HA nano powder. XRF detected the presence of Ag and Si in phase-pure Ag/Si-HA. The Ag/Si-HA nano powders were then compacted and sintered at various temperatures (900-1300 °C) and found to achieve a maximum densification of 93 % at 1300 °C, with a grain size of approximately 1 m. Phase-purity was maintained up to a temperature of 1300 °C, as observed from the XRD pattern. This study thus demonstrated that a phase-pure Ag/Si-HA was synthesized via an aqueous precipitation technique. © 2011 IEEE.
Source Title: 2011 Defense Science Research Conference and Expo, DSR 2011
ISBN: 9781424492763
DOI: 10.1109/DSR.2011.6026836
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Sep 7, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.