Thermokinetic investigation of the drying conditions on amorphous calcium phosphate

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

doi:10.4028/www.scientific.net/KEM.758.204

Thermokinetic investigation of the drying conditions on amorphous calcium phosphate

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

Department of Human Physiology and Biochemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

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 language	English
Title of host publication	Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine
Editors	Christian Rey, Christele Combes, Christophe Drouet
Publisher	Trans Tech Publications Ltd
Pages	204-209
Number of pages	6
ISBN (Print)	9783035712209
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.758.204
Publication status	Published - 2017
Event	29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine - Toulouse, France Duration: 25 Oct 2017 → 27 Oct 2017 Conference number: 29

Publication series

Name	Key Engineering Materials
Volume	758 KEM
ISSN (Print)	1013-9826
ISSN (Electronic)	1662-9795

Conference

Conference	29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine
Abbreviated title	ISCM 2017
Country/Territory	France
City	Toulouse
Period	25/10/17 → 27/10/17

Keywords*

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

Field of Science*

2.5 Materials engineering
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

Access to Document

10.4028/www.scientific.net/KEM.758.204

Cite this

Brangule, A., Avotiņa, L., Zariņš, A., Haļitovs, M., Gross, K. A., & Ķizane, G. (2017). Thermokinetic investigation of the drying conditions on amorphous calcium phosphate. In C. Rey, C. Combes, & C. Drouet (Eds.), Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine (pp. 204-209). (Key Engineering Materials; Vol. 758 KEM). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.758.204

Brangule, Agnese ; Avotiņa, Liga ; Zariņš, Arturs et al. / Thermokinetic investigation of the drying conditions on amorphous calcium phosphate. Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine. editor / Christian Rey ; Christele Combes ; Christophe Drouet. Trans Tech Publications Ltd, 2017. pp. 204-209 (Key Engineering Materials).

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title = "Thermokinetic investigation of the drying conditions on amorphous calcium phosphate",

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?",

keywords = "Activation energy, Amorphous calcium phosphate, Arrhenius plot., Chemisorbed water, DTA/TG, FTIR-PAS, Physisorbed water",

author = "Agnese Brangule and Liga Avotiņa and Arturs Zariņ{\v s} and Mihails Haļitovs and Gross, {Karlis Agris} and Gunta Ķizane",

note = "Publisher Copyright: {\textcopyright} 2017 Trans Tech Publications, Switzerland. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, ISCM 2017 ; Conference date: 25-10-2017 Through 27-10-2017",

year = "2017",

doi = "10.4028/www.scientific.net/KEM.758.204",

language = "English",

isbn = "9783035712209",

series = "Key Engineering Materials",

publisher = "Trans Tech Publications Ltd",

pages = "204--209",

editor = "Christian Rey and Christele Combes and Christophe Drouet",

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}

Brangule, A, Avotiņa, L, Zariņš, A, Haļitovs, M, Gross, KA & Ķizane, G 2017, Thermokinetic investigation of the drying conditions on amorphous calcium phosphate. in C Rey, C Combes & C Drouet (eds), Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine. Key Engineering Materials, vol. 758 KEM, Trans Tech Publications Ltd, pp. 204-209, 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, Toulouse, France, 25/10/17. https://doi.org/10.4028/www.scientific.net/KEM.758.204

Thermokinetic investigation of the drying conditions on amorphous calcium phosphate. / Brangule, Agnese; Avotiņa, Liga; Zariņš, Arturs et al.
Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine. ed. / Christian Rey; Christele Combes; Christophe Drouet. Trans Tech Publications Ltd, 2017. p. 204-209 (Key Engineering Materials; Vol. 758 KEM).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Thermokinetic investigation of the drying conditions on amorphous calcium phosphate

AU - Brangule, Agnese

AU - Avotiņa, Liga

AU - Zariņš, Arturs

AU - Haļitovs, Mihails

AU - Gross, Karlis Agris

AU - Ķizane, Gunta

N1 - Conference code: 29

PY - 2017

Y1 - 2017

N2 - 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?

AB - 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?

KW - Activation energy

KW - Amorphous calcium phosphate

KW - Arrhenius plot.

KW - Chemisorbed water

KW - DTA/TG

KW - FTIR-PAS

KW - Physisorbed water

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DO - 10.4028/www.scientific.net/KEM.758.204

M3 - Conference contribution

AN - SCOPUS:85035027093

SN - 9783035712209

T3 - Key Engineering Materials

SP - 204

EP - 209

BT - Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine

A2 - Rey, Christian

A2 - Combes, Christele

A2 - Drouet, Christophe

PB - Trans Tech Publications Ltd

T2 - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine

Y2 - 25 October 2017 through 27 October 2017

ER -

Brangule A, Avotiņa L, Zariņš A, Haļitovs M, Gross KA, Ķizane G. Thermokinetic investigation of the drying conditions on amorphous calcium phosphate. In Rey C, Combes C, Drouet C, editors, Bioceramics - 29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine. Trans Tech Publications Ltd. 2017. p. 204-209. (Key Engineering Materials). doi: 10.4028/www.scientific.net/KEM.758.204

Thermokinetic investigation of the drying conditions on amorphous calcium phosphate

Abstract

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Keywords*

Field of Science*

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