Relation between aggregation and heterogeneity of obtained structure in sol-gel derived CaO-P2O5-SiO2

被引：44

作者：

Jokinen, M

Rahiala, H

Rosenholm, JB

Peltola, T

Kangasniemi, I

机构：

[1] Abo Akad Univ, Dept Chem Phys, FIN-20500 Turku, Finland

[2] Univ Turku, Inst Dent, FIN-20520 Turku, Finland

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1998年 / 12卷 / 03期

关键词：

sol-gel; bioceramics; aggregation; rheology; structure;

D O I：

10.1023/A:1008642117227

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Potentially bioactive sol-gel derived CaO-P2O5-SiO2 systems are studied and the influence of aggregation mechanism on the gel structure is discussed. A rheological measuring technique is used to monitor the aggregation process and the results are related to heterogeneity of the obtained gel structure. The results indicate that heterogeneity is produced in the sol-gel transition when calcium nitrate and phosphoric acid are used as precursors of CaO and P2O5. This destroys the correlation between bioactivity and the calcium and phosphorus content of the gel derived glasses.

引用

页码：159 / 167

页数：9

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