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Konishi, Toshiisa Graduate School of Natural Science and Technology, Okayama University
Yamashita, Kohei Graduate School of Natural Science and Technology, Okayama University
Nagata, Kohei Organization for the Strategic Coordination of Research and Intellectual Property, Meiji University
Lim, Poon Nian Department of Mechanical Engineering, National University of Singapore
Thian, Eng San Department of Mechanical Engineering, National University of Singapore
Aizawa, Mamoru Department of Applied Chemistry, School of Science and Technology, Meiji University
Solid-state nuclear magnetic resonance (NMR) spectroscopy is a technique, which can be used to provide insight into the chemical structure of non-crystalline and crystalline materials. Hence, the present study aimed to elucidate the setting mechanism of CPC, which was fabricated using beta -tricalcium phosphate (beta -TCP)-inositol phosphate (IP6) composite powder using NMR In addition, the effect of IP6 on the local chemical structure of the beta -TCP-IP6 composite powder and its hardened cement would also be investigated. The H-1 -> P-31 heteronuclear correlation NMR spectrum revealed that an amorphous hydrated layer, along with small amount of hydroxyapatite (HA) was formed on the surface of beta -TCP during the ball-milling process. Results demonstrated that the IP6 in the hydrated layer on the surface of beta -TCP inhibited the formation of HA. Moreover, the setting reaction of the cement was mainly triggered by the dissolution of the amorphous hydrated layer on beta -TCP surface, and subsequent precipitation, followed by the inter-entanglement between the HA crystals on the beta -TCP.
Journal of Physics: Materials
© 2019 The Author(s).
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