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首页> 外文期刊>Journal of Crystal Growth >Use Of Biopolymers As Oriented Supports For The Stabilization Of Different Polymorphs Of Biomineralized Calcium Carbonate With Complex Shape
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Use Of Biopolymers As Oriented Supports For The Stabilization Of Different Polymorphs Of Biomineralized Calcium Carbonate With Complex Shape

机译：使用生物聚合物作为定向载体稳定具有复杂形状的生物矿化碳酸钙的不同多晶型物

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This work concerns the use of different biopolymers such as chitosan, alginate or κ-carrageenan as substrates to contribute to the study of the crystallization of calcium carbonate. The experimental biomimetic approach involves the preparation of mixtures of biopolymer solutions with a solution of CaCl_2, which is processed by means of spin-coating and then exposed to CO_2 by a slow diffusion method for the growth of CaCO_3. The obtained crystals show that each biopolymer has different effects on the crystallization habit. Different agglomerations of calcium carbonate crystals are initially the vaterite phase, which is subsequently stabilized as calcite. Biomineralization on each biopolymer gave rise to complex structures very different to those normally found in vitro, but similar to those observed in Nature. This confirms the strong influence of the macromolecules with ionizable groups on the stabilization of a determined polymorph and also on the morphology of the calcium carbonate crystals.
机译：这项工作涉及使用不同的生物聚合物，例如壳聚糖，藻酸盐或κ-角叉菜胶作为底物，以促进碳酸钙结晶的研究。实验仿生方法涉及生物聚合物溶液与CaCl_2溶液的混合物的制备，该溶液通过旋涂进行处理，然后通过慢扩散法暴露于CO_2中以生长CaCO_3。所获得的晶体表明每种生物聚合物对结晶习性具有不同的影响。碳酸钙晶体的不同结块最初是球ate石相，随后稳定为方解石。每个生物聚合物上的生物矿化产生的复杂结构与通常在体外发现的结构非常不同，但与在《自然》中观察到的结构相似。这证实了具有可电离基团的大分子对确定的多晶型物的稳定性以及碳酸钙晶体形态的强烈影响。

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