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Titolo:
Composition and structure of apatite formed on organic polymer in simulated body fluid with a high content of carbonate ion
Autore:
Kim, HM; Kishimoto, K; Miyaji, F; Kokubo, T; Yao, T; Suetsugu, Y; Tanaka, J; Nakamura, T;
Indirizzi:
Kyoto Univ, Fac Engn, Dept Chem Mat, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 Chem Mat, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ, Grad Sch Energy Sci, Dept Fundamental Energy Sci, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 nergy Sci, Sakyo Ku, Kyoto 6068501, Japan Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 305, Japan Natl Inst Res Inorgan Mat Tsukuba Ibaraki Japan 305 a, Ibaraki 305, Japan Kyoto Univ, Fac Med, Dept Orthopaed Surg, Sakyo Ku, Kyoto 6068506, Japan Kyoto Univ Kyoto Japan 6068506 paed Surg, Sakyo Ku, Kyoto 6068506, Japan
Titolo Testata:
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
fascicolo: 7, volume: 11, anno: 2000,
pagine: 421 - 426
SICI:
0957-4530(200007)11:7<421:CASOAF>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIOMIMETIC PROCESS; SUBSTRATE; IMPROVEMENT; ADHESION; LAYER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, HM Kyoto Univ, Fac Engn, Dept Chem Mat, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 t, Sakyo Ku, Kyoto 6068501, Japan
Citazione:
H.M. Kim et al., "Composition and structure of apatite formed on organic polymer in simulated body fluid with a high content of carbonate ion", J MAT S-M M, 11(7), 2000, pp. 421-426

Abstract

Apatite layer was formed on polyethyleneterephthalate (PET) substrate by the following biomimetic process. The PET substrate was placed on granular particles of a CaO, SiO2-based glass in simulated body fluid (SBF) with ion concentrations nearly equal to those of human blood plasma to form apatite nuclei on their surfaces. The apatite nuclei was then grown into a continuous layer by subsequently soaking the substrate in SBF under air or CO2 atmosphere in which CO2 partial pressure in the ambient was adjusted to 14.8 kPa to increase the content of carbonate ion to a level nearly equal to that of blood plasma. The increase in the content of carbonate ions in SBF changed the Ca/P atomic ratio of the apatite from 1.51 to 1.63, content of CO32-ions from 2.64 to 4.56 wt %, and lattice constants a from 94.32 to 94.23 nm and c from 68.70 to 68.83 nm, respectively. The Ca/P ratio and lattice constants of the apatite formed in SBF under CO2 atmosphere were approximately identical to those of bone apatite, i.e. Ca/P atomic ratio 1.65, content of CO32- ion 5.80 wt % and lattice constants a 94.20 and c 68.80 nm. This indicates that an apatite with composition and structure nearly identical tothose of bone apatite can be produced in SBF by adjusting its ion concentrations including the content of carbonate ions to be equal to those of blood plasma. (C) 2000 Kluwer Academic Publishers.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 16:20:21