Structural characterization of room-temperature synthesized nano-sized beta-tricalcium phosphate.

Abstract:

:A simple route for synthesizing nano-sized beta-tricalcium phosphate (beta-TCP) at room temperature has been developed in methanol solvent. The phase evolution from CaHPO4, intermediate amorphous calcium phosphate (ACP) phases (including ACP1 and ACP2 with different structures) to final beta-TCP with increasing aging time was observed. The formation of beta-TCP phase is favored due to the incorporation of carbonate which can suppress the transformation of ACP1 phase. High-resolution transmission electron microscopy image along [1-100] zone axis of beta-TCP reveals two types of lattice fringes (straight and wavy fringes) in beta-TCP structure due to structural imperfection. Furthermore, the observations of abnormal diffraction intensity and superlattice diffraction in selected-area diffraction patterns further confirm the chemical order-disorder characteristics in beta-TCP structure and can be used to elucidate the resorbability of beta-TCP in either in vivo or in vitro environment due to the imperfection in beta-TCP crystal.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Bow JS,Liou SC,Chen SY

doi

10.1016/j.biomaterials.2003.10.046

keywords:

subject

Has Abstract

pub_date

2004-07-01 00:00:00

pages

3155-61

issue

16

eissn

0142-9612

issn

1878-5905

pii

S0142961203008883

journal_volume

25

pub_type

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