The co-effect of collagen and magnesium ions on calcium carbonate biomineralization

被引：50

作者：

Jiao, Yunfeng ^{[1
]}

Feng, Qingling ^{[1
]}

Li, Xiaoming ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Biomat Lab, Beijing 100084, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2006年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

calcium carbonate; collagen; magnesium ion; biomineralization;

D O I：

10.1016/j.msec.2005.08.038

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The process of calcium carbonate biomineralization in the solution containing collagen and magnesium ions was studied in this paper. The results were characterized by using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect rules were obtained by the cooperation of collagen and magnesium ions in different concentration. The experiment results showed that in the presence of both collagen and magnesium ions, aragonite and vaterite were precipitated at low Mg/Ca ion concentration ratio, while only aragonite with regular spherical morphology was Precipitated at high Mg/Ca ion concentration ratio. It indicated that collagen has a promotional effect on magnesium ions in controlling the polymorph of calcium carbonate crystal. A much wider range of calcium carbonate morphologies was observed in the presence of both collagen and magnesium ions. The experiments suggested that collagen acts in combination with magnesium ions to inhibit calcite crystal growth, while favoring the formation of aragonite crystals. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：648 / 652

页数：5

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