Mineralization of calcium carbonate by controlled release of carbonate in aqueous solution

被引：49

作者：

Faatz, M ^{[1
]}

Gröhn, F ^{[1
]}

Wegner, G ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2005年 / 25卷 / 02期

关键词：

amorphous calcium carbonate; biomineralization; phase diagram; decarboxylation;

D O I：

10.1016/j.msec.2005.01.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The generation of carbon dioxide from organic precursors in aqueous media in presence of calcium chloride and under conditions where calcium carbonate is formed was investigated. Photochemical decomposition of pyravic acid, 2-nitro-phenylacetic acid and 4-benzoylphenyl acetic acid gave ill-defined morphologies of calcium carbonate contaminated by organic by-products. Alkaline hydrolysis of dimethyl- and diethyl-carbonate yielded amorphous calcium carbonate in form nanospheres of narrow distribution of radii if the precipitation occurred under quiescent conditions. Addition of a polymer surfactant gave spherical particles as well, however consisting of vaterite. The formation of spherical particles of amorphous calcium carbonate is rationalized in terms of a liquid-liquid phase separation followed by rapid gelation of the droplet phase of high concentration of calcium carbonate. A lower critical solution temperature is postulated and its value was estimated as 10 degrees C. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：153 / 159

页数：7

共 25 条

[1] Inhibition of adhesion and precipitation of CaCO3 by aminopolyphosphonate [J].