Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 70, Issue -, Pages 824-831Publisher
ELSEVIER
DOI: 10.1016/j.msec.2016.09.048
Keywords
Hydroxyapatite; Poly(D,L lactide-co-glycolide (50:50)); Buffering effects; Particle-mediated water sorption
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The aim of this study is to explore the importance of the potentially competing effects of buffering effects of the calcium phosphate filler and particle-mediated water sorption on the degradation products of poly(D,L lactide-co-glycolide (50:50))(PLGA)/hydroxyapatite (HA) composites. Further the influence of type of HA on the mechanical properties of the composites was investigated. Phase pure HA was synthesised via a reaction between aqueous solutions of calcium hydroxide and. orthophosphoric acid. The powder produced was either used as produced (uncalcined) or calcined in air or calcined in a humidified argon atmosphere. An in-vitro degradation study was carried out in phosphate buffered saline (PBS). The result's obtained indicated that the degradation rate of the composite might be better understood if both the buffering effects and the rate of water sorption by the composites are considered. (C) 2016 Elsevier B.V. All rights reserved.
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