Publication detail

Effect of moisture on the reactivity of alpha-tricalcium phosphate

ESPANOL, M. DAVIS, E. MESLET, E. MESTRES, G. MONTUFAR JIMENEZ, E. GINEBRA, M.

Original Title

Effect of moisture on the reactivity of alpha-tricalcium phosphate

Type

journal article in Web of Science

Language

English

Original Abstract

The ability of the high-temperature polymorph of tricalcium phosphate, & alpha;-TCP, to hydrolyse to calcium-deficient hydroxyapatite underlies many developments in the field of synthetic bone grafts, including calcium phosphate cements, foams, and self-setting inks. The objective of the present work was to investigate the effect of humidity on & alpha;-TCP powder reactivity. The results showed that a 3-week incubation at high relative humidity (80%) had no impact on reactivity, but, as the incubation was prolonged, the powder started to hydrolyse. This reactivity was associated to the presence of defects and to an amorphous phase induced during powder milling. Moisture studies performed under static/dynamic conditions gave comparable water adsorption percentages. The dynamic studies further proved irreversible water sorption, indicating that some water molecules reacted with the powder after short incubation times. Taken together, these results demonstrate that, although & alpha;-TCP powder adsorbs water from moisture immediately, the impact on reactivity appears only after several weeks of storage.

Keywords

Moisture; Alpha-tricalcium phosphate; Relative humidity; Vapor sorption; Hydrolysis

Authors

ESPANOL, M.; DAVIS, E.; MESLET, E.; MESTRES, G.; MONTUFAR JIMENEZ, E.; GINEBRA, M.

Released

26. 2. 2023

Publisher

ELSEVIER SCI LTD

Location

OXFORD

ISBN

0272-8842

Periodical

Ceramics International

Year of study

49

Number

11

State

United Kingdom of Great Britain and Northern Ireland

Pages from

18228

Pages to

18237

Pages count

10

URL

https://doi.org/10.1016/j.ceramint.2023.02.193

BibTex

@article{BUT187090,
  author="ESPANOL, M. and DAVIS, E. and MESLET, E. and MESTRES, G. and MONTUFAR JIMENEZ, E. and GINEBRA, M.",
  title="Effect of moisture on the reactivity of alpha-tricalcium phosphate",
  journal="Ceramics International",
  year="2023",
  volume="49",
  number="11",
  pages="18228--18237",
  doi="10.1016/j.ceramint.2023.02.193",
  issn="0272-8842",
  url="https://doi.org/10.1016/j.ceramint.2023.02.193"
}