Control of Ag release from Ag-containing calcium phosphates in simulated body fluid

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

2 Citations (Scopus)

Abstract

The dissolution behavior of Ag-containing hydroxyapatite (HA) powders and their sintered comparts in a Tris buffer solution (TBS) with a pH value of 7.4 was investigated. The Ag-containing calcium phosphate powders were prepared by a precipitation method using aqueous solutions. The (Ca+Ag)/P and Ag/(Ca+Ag) atomic ratios in the solutions were set to 1.33 and 1.67 and 0 and 0.10, respectively. The precipitated powders were sintered at 1373 K for 1 d. β-tricalcium phosphate (TCP) and HA were the main phases of the sintered compacts at (Ca+Ag)/P ratios of 1.33 and 1.67, respectively. Metallic Ag coexisted with HA, and Ag was incorporated into the β-TCP matrix. Ag ion release was observed in both the as-precipitated powders and the sintered compacts in the TBS. The amount of Ag ion release from the sintered compacts of the β-TCP matrix was higher than that from the sintered compacts with the HA matrix and metallic Ag particles. The formation of AgCl was confirmed during the immersion of both the as-precipitated powders and the sintered compacts.

Original languageEnglish
Title of host publicationBiomaterials Science
Subtitle of host publicationProcessing, Properties and Applications V
EditorsSusmita Bose, Amit Bandyopadhyay, Roger Narayan
PublisherAmerican Ceramic Society
Pages13-20
Number of pages8
ISBN (Electronic)9781119190028
Publication statusPublished - 2015 Jan 1
EventNext Generation Biomaterials and Surface Properties of Biomaterials Symposia - Materials Science and Technology 2014 Conference, MS and T 2014 - Pittsburgh, United States
Duration: 2014 Oct 122014 Oct 16

Publication series

NameCeramic Transactions
Volume254
ISSN (Print)1042-1122

Other

OtherNext Generation Biomaterials and Surface Properties of Biomaterials Symposia - Materials Science and Technology 2014 Conference, MS and T 2014
CountryUnited States
CityPittsburgh
Period14/10/1214/10/16

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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