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Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita

Aragonite is a metastable polymorph of calcium carbonate. The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite. The questions of how, and why these organisms prefer the thermodynamically unstable aragonite for the construction of their hard shells ar...

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Main Authors: Bessler, Karl E., Rodrigues, Laécio C.
Format: Artigo
Language: Portuguese
Published: Sociedade Brasileira de Química 2017
Subjects:
polymorphism
aragonite
synthesis
Online Access: http://repositorio.unb.br/handle/10482/27195
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spelling ir-10482-271952019-03-28T14:09:03Z Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita The polymorphs of calcium carbonate: an easy synthesis of aragonite Bessler, Karl E. Rodrigues, Laécio C. polymorphism aragonite synthesis Aragonite is a metastable polymorph of calcium carbonate. The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite. The questions of how, and why these organisms prefer the thermodynamically unstable aragonite for the construction of their hard shells are discussed. The importance of the biomineralization process for the development of new materials is outlined. In the experimental part, a very simple synthesis of polycrystalline aragonite is performed, using carbonated mineral water available at the market. The synthesized aragonite is easily identified by its infrared spectrum. 2017-12-07T04:49:27Z 2017-12-07T04:49:27Z 2008 Artigo Quím. Nova,v.31,n.1,p.178-180,2008 0100-4042 http://repositorio.unb.br/handle/10482/27195 10.1590/S0100-40422008000100032 pt Acesso Aberto application/pdf Sociedade Brasileira de Química http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000100032&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-40422008000100032&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40422008000100032&lng=en&nrm=iso
institution REPOSITORIO UNB
collection REPOSITORIO UNB
language Portuguese
topic polymorphism
aragonite
synthesis
spellingShingle polymorphism
aragonite
synthesis
Bessler, Karl E.
Rodrigues, Laécio C.
Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
description Aragonite is a metastable polymorph of calcium carbonate. The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite. The questions of how, and why these organisms prefer the thermodynamically unstable aragonite for the construction of their hard shells are discussed. The importance of the biomineralization process for the development of new materials is outlined. In the experimental part, a very simple synthesis of polycrystalline aragonite is performed, using carbonated mineral water available at the market. The synthesized aragonite is easily identified by its infrared spectrum.
format Artigo
author Bessler, Karl E.
Rodrigues, Laécio C.
author_sort Bessler, Karl E.
title Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
title_short Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
title_full Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
title_fullStr Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
title_full_unstemmed Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
title_sort os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
publisher Sociedade Brasileira de Química
publishDate 2017
url http://repositorio.unb.br/handle/10482/27195
_version_ 1641988691631013888
score 13.657419

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