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Study of particle size dependant reactivity in an alpha-TCP orthophosphate cement

Camire, Christopher LU ; Jegou Saint-Jean, Simon LU ; McCarthy, Ian LU ; Hansen, Staffan LU and Lidgren, Lars LU (2004) In Key Engineering Materials 254-256. p.269-272
Abstract
Calcium phosphates have been of great interest in the field of medicine for many decades due to their biocompatibility, hardening properties and diverse areas of application. In this study two different alpha phase tricalcium phosphate powders were produced of distinctly different particle size distributions. These two powders were then tested for reactivity and phase evolution. X-ray diffraction was used to characterise the beginning and final products and the exotherm were measured with an isothermal calorimeter. The powders were then viewed relative to their starting properties and differences were drawn. Fine material exhibited a much larger exotherm, which was not directly proportional to the difference in surface area of the... (More)
Calcium phosphates have been of great interest in the field of medicine for many decades due to their biocompatibility, hardening properties and diverse areas of application. In this study two different alpha phase tricalcium phosphate powders were produced of distinctly different particle size distributions. These two powders were then tested for reactivity and phase evolution. X-ray diffraction was used to characterise the beginning and final products and the exotherm were measured with an isothermal calorimeter. The powders were then viewed relative to their starting properties and differences were drawn. Fine material exhibited a much larger exotherm, which was not directly proportional to the difference in surface area of the particulate. The difference has been attributed to the variant concentrations of nucleation sites assisting the ionic dissolution and precipitation reaction. For proper and ultimately efficient use of this material in the clinic it remains important to fully understand and have control over reactivity. Higher success rates and more reliable fracture fixation will result. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Key Engineering Materials
volume
254-256
pages
269 - 272
publisher
Trans Tech Publications Ltd
external identifiers
  • wos:000189415000067
ISSN
1013-9826
language
English
LU publication?
yes
id
3d9abb84-e914-4925-8958-b1460a3d74d0 (old id 140948)
alternative location
http://www.scientific.net/default.cfm?pdf=1&issn=1013-9826&pg=1&ppg=61&paper=269&isbn=0-87849-932-6
date added to LUP
2007-07-12 10:58:34
date last changed
2016-04-16 05:12:03
@article{3d9abb84-e914-4925-8958-b1460a3d74d0,
  abstract     = {Calcium phosphates have been of great interest in the field of medicine for many decades due to their biocompatibility, hardening properties and diverse areas of application. In this study two different alpha phase tricalcium phosphate powders were produced of distinctly different particle size distributions. These two powders were then tested for reactivity and phase evolution. X-ray diffraction was used to characterise the beginning and final products and the exotherm were measured with an isothermal calorimeter. The powders were then viewed relative to their starting properties and differences were drawn. Fine material exhibited a much larger exotherm, which was not directly proportional to the difference in surface area of the particulate. The difference has been attributed to the variant concentrations of nucleation sites assisting the ionic dissolution and precipitation reaction. For proper and ultimately efficient use of this material in the clinic it remains important to fully understand and have control over reactivity. Higher success rates and more reliable fracture fixation will result.},
  author       = {Camire, Christopher and Jegou Saint-Jean, Simon and McCarthy, Ian and Hansen, Staffan and Lidgren, Lars},
  issn         = {1013-9826},
  language     = {eng},
  pages        = {269--272},
  publisher    = {Trans Tech Publications Ltd},
  series       = {Key Engineering Materials},
  title        = {Study of particle size dependant reactivity in an alpha-TCP orthophosphate cement},
  volume       = {254-256},
  year         = {2004},
}