Calcite overgrowth on carboxylated polymers

被引：26

作者：

Dousi, E ^{[1
]}

Kallitsis, J ^{[1
]}

Chrissanthopoulos, A ^{[1
]}

Mangood, AH ^{[1
]}

Dalas, E ^{[1
]}

机构：

[1] Univ Patras, Dept Chem, GR-26504 Patras, Greece

来源：

JOURNAL OF CRYSTAL GROWTH | 2003年 / 253卷 / 1-4期

关键词：

computer simulation; nucleation; growth from solutions; minerals;

D O I：

10.1016/S0022-0248(03)01091-1

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The kinetics of calcite crystallization on polymers containing -C = O, functional group was investigated by the constant composition method. The apparent order for the crystallization process was found to be 2.2 +/- 0.3 indicative of a surface diffusion controlled mechanism. The number of ions forming the critical nucleus was found to be 3-6. These values were confirmed by quantum mechanical calculations using the PM3 method of the MOPAC program package. The surface energy of the growing phase was found to be 30-32 mJm(-2) approximately. The formation of calcite Was initiated through the interaction of Ca2+ ions with the negative end of the -C = 0 bond as concluded from the quantum mechanical calculations. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：496 / 503

页数：8

共 30 条

[1] Biomimetic mineralization in and on polymers [J].