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Title: Monetite promoting effect of citric acid on brushite cement setting kinetics
Authors: Şahin, Erdem
Çiftçioğlu, Muhsin
Keywords: Brushite
Calcium phosphate cement
Citric acid
Tricalcium phosphate
Issue Date: Jun-2014
Publisher: Maney Publishing
Source: Şahin, E., and Çiftçiog̀lu, M. (2014). Monetite promoting effect of citric acid on brushite cement setting kinetics. Materials Research Innovations, 18(3), 138-145. doi:10.1179/1433075X13Y.0000000175
Abstract: Brushite forming calcium phosphate cements receive growing interest in hard tissue scaffold applications due to their high surface area and high bioresorbability. The finer microstructure of monetite, the dehydrated form of brushite, has attracted attention for bone tissue engineering applications. The reduction in brushite content of the b-tricalcium phosphate-monocalcium phosphate monohydrate cement system by selective inhibition of growth upon addition of citric acid to excess setting liquid was investigated. The relaxation period during cement setting was monitored by pH stat titration and free drift runs. Spectrometric analysis revealed that the change in solubility of calcium phosphates upon addition of citric acid caused the inhibition of brushite formation and promotion of monetite precipitation. Dissolution of monetite crystals was insensitive to citrate adsorption despite their lower surface area compared to brushite. Overall brushite/ monetite ratio decreased consistently with increasing citric acid concentration in the of 0?1-0?5M range.
ISSN: 1432-8917
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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