Thermokinetic investigation of the drying conditions on amorphous calcium phosphate

Agnese Brangule, Liga Avotiņa, Arturs Zariņš, Mihails Haļitovs, Karlis Agris Gross, Gunta Ķizane

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The present work investigated dried calcium phosphate powders which still retain an amorphous or poorly crystalline structure under a variety of conditions. In previous studies, freezedrying was found to be the optimum drying condition. However, several publications, as well as our previous studies, have shown that calcium phosphate amorphous, or a poorly crystalline structure, can retain their structure even if the samples are dried immediately after synthesis up to 200°C. In our study, we used the thermokinetic studies FTIR and XRD and showed that the samples are amorphous, or poorly crystalline, but were unable to answer the questions: Is there a difference between the differently dried amorphous calcium phosphates? What are the optimum drying conditions under which the amorphous calcium phosphate (ACP) structure loses the physically bounded water, but still retains the chemically bounded water?

Original languageEnglish
Title of host publicationBioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine
EditorsChristian Rey, Christele Combes, Christophe Drouet
PublisherTrans Tech Publications Ltd
Pages204-209
Number of pages6
ISBN (Print)9783035712209
DOIs
Publication statusPublished - 2017
Event29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine - Toulouse, France
Duration: 25 Oct 201727 Oct 2017
Conference number: 29

Publication series

NameKey Engineering Materials
Volume758 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine
Abbreviated titleISCM 2017
Country/TerritoryFrance
CityToulouse
Period25/10/1727/10/17

Keywords

  • Activation energy
  • Amorphous calcium phosphate
  • Arrhenius plot.
  • Chemisorbed water
  • DTA/TG
  • FTIR-PAS
  • Physisorbed water

Field of Science

  • 2.5 Materials emgineering
  • 2.6 Medical engineering
  • 1.4 Chemical sciences

Publication Type

  • 3.2. Articles or chapters in other proceedings other than those included in 3.1., with an ISBN or ISSN code

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