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Materials, Methods & Technologies, Volume 9, 2015

PREPARATION AND CHARACTERIZATION OF PASTES BASED ON CALCIUM PHOSPHATE POWDERS AND SODIUM HYALURONATE
Radost Ilieva, Ognyan Petrov, Elena Dyulgerova
Pages: 395-403
Published: 31 May 2015
Views: 1124
Downloads: 369
Abstract: Series of pastes were prepared on the basis of mono- or bi-phased calcium phosphate powders and solutions of sodium hyaluronate and its modifications as a liquid phase. Three procedures for preparation of the powders were applied and as a result samples with different chemical, phase and morphological characteristics were obtained. The influence of the particle size and morphology of the phases as well as of the composition of the liquid phase and the solid to liquid ratio on the formation features and mechanical strength of the pastes were investigated. Their influence on the micro-environment surrounding by in vitro tests of dried molds in simulated body fluid and in distilled water were followed as well. The results showed that the materials are promising for practical use in medicine.
Keywords: paste-like materials, calcium phosphates, hydroxyapatite, β-tricalcium phosphate, sodium hyaluronate
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