一种在可溶性三元添加剂体系中合成碳酸钙球形聚集体的仿生方法。

A bio-inspired approach to the synthesis of CaCO3 spherical assemblies in a soluble ternary-additive system.

作者信息

Deng S G, Cao J M, Feng J, Guo J, Fang B Q, Zheng M B, Tao J

机构信息

Nanomaterials Research Institute, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.

出版信息

J Phys Chem B. 2005 Jun 16;109(23):11473-7. doi: 10.1021/jp050290b.

DOI:10.1021/jp050290b

PMID:16852405

Abstract

Two different soluble polymers, poly(ethylene glycol) (PEG) and poly(methacrylic acid) (PMAA), with individual functions were successfully employed in combination with a third additive, sodium dodecyl sulfate (SDS), in one system, and spherical assemblies (e.g., hollow spheres) with multiscale constructs of CaCO3 were obtained. The variation of polymer concentration drastically changed both the morphology and polymorph of the produced CaCO3 crystals due to the corresponding transformation of the micelle structure. This study suggests that noncovalent interaction and cooperation between soluble macromolecules play key roles in controlling the growth of biominerals. The results also suggest a novel and facile route toward biomimetic inorganic synthesis.

摘要

两种具有不同功能的可溶性聚合物，聚乙二醇（PEG）和聚甲基丙烯酸（PMAA），与第三种添加剂十二烷基硫酸钠（SDS）成功地组合应用于一个体系中，获得了具有碳酸钙多尺度结构的球形聚集体（如空心球）。由于胶束结构的相应转变，聚合物浓度的变化极大地改变了所生成碳酸钙晶体的形态和多晶型。该研究表明，可溶性大分子之间的非共价相互作用与协同作用在控制生物矿物的生长中起着关键作用。研究结果还为仿生无机合成提供了一条新颖且简便的途径。