start-ver=1.4
cd-journal=joma
no-vol=2
cd-vols=
no-issue=3
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190603
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Solid-state nuclear magnetic resonance study of setting mechanism of beta-tricalcium phosphate-inositol phosphate composite cements
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=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.
en-copyright=
kn-copyright=

en-aut-name=KonishiToshiisa
en-aut-sei=Konishi
en-aut-mei=Toshiisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=YamashitaKohei
en-aut-sei=Yamashita
en-aut-mei=Kohei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=NagataKohei
en-aut-sei=Nagata
en-aut-mei=Kohei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=LimPoon Nian
en-aut-sei=Lim
en-aut-mei=Poon Nian
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=ThianEng San
en-aut-sei=Thian
en-aut-mei=Eng San
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=AizawaMamoru
en-aut-sei=Aizawa
en-aut-mei=Mamoru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=3
en-affil=Organization for the Strategic Coordination of Research and Intellectual Property, Meiji University
kn-affil=

affil-num=4
en-affil=Department of Mechanical Engineering, National University of Singapore
kn-affil=

affil-num=5
en-affil=Department of Mechanical Engineering, National University of Singapore
kn-affil=

affil-num=6
en-affil=Department of Applied Chemistry, School of Science and Technology, Meiji University
kn-affil=
en-keyword=beta-tricalcium phosphate
kn-keyword=beta-tricalcium phosphate
en-keyword=calcium-phosphate cement
kn-keyword=calcium-phosphate cement
en-keyword=inositol phosphate
kn-keyword=inositol phosphate
en-keyword=solid-state NMR
kn-keyword=solid-state NMR
en-keyword=setting mechanism
kn-keyword=setting mechanism
END