Correlating crystallinity and reactivity in an α-tricalcium phosphate

被引：77

作者：

Camiré, CL

Gbureck, U

Hirsiger, W

Bohner, M

机构：

[1] Dr Robert Mathys Fdn, CH-2544 Bettlach, Switzerland

[2] Univ Lund Hosp, Dept Orthopaed, S-22185 Lund, Sweden

[3] Univ Wurzburg, Dept Funct Mat Med & Dent, D-97070 Wurzburg, Germany

来源：

BIOMATERIALS | 2005年 / 26卷 / 16期

基金：

瑞典研究理事会;

关键词：

bone; bone cement; bone graft; calcium phosphate; calcium phosphate cement; hydroxyapatite;

D O I：

10.1016/j.biomaterials.2004.08.001

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this study, the effect of how variant milling time affects material characteristics of alpha phase tricalcium phosphate powder (alpha-TCP) was studied. Two alpha-TCP batches were separated in small lots and milled for various times for up to 4 h. The resulting milled lots were characterized by measuring their crystallinity, particle size, specific surface area, thermal stability, and heat released during hydration. Mechanical treatment was seen to greatly increase the alpha-TCP X-ray amorphous fraction and heat release during hydration, almost independently of alpha-TCP particle size and specific surface area. Therefore, the results suggest that the formation and presence of an X-ray amorphous phase in the alpha-TCP powder greatly contribute to its reactivity. The exotherm of the powders increases from 103 to 238 kJ/mol after milling. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2787 / 2794

页数：8

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