scholarly journals The Effect of Aspartic Acid and Glycine on Amorphous Calcium Carbonate (ACC) Structure, Stability and Crystallization

2014 ◽  
Vol 10 ◽  
pp. 143-148 ◽  
Author(s):  
D.J. Tobler ◽  
J.D. Rodriguez Blanco ◽  
K. Dideriksen ◽  
K.K. Sand ◽  
N. Bovet ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Aspartic Acid ◽  
Structure Stability ◽  
Amorphous Calcium Carbonate

Control of Polymorph Selection in Amorphous Calcium Carbonate Crystallization by Poly(Aspartic Acid): Two Different Mechanisms

Small ◽  
2017 ◽  
Vol 13 (21) ◽  
pp. 1603100 ◽  
Author(s):  
Zhaoyong Zou ◽  
Luca Bertinetti ◽  
Yael Politi ◽  
Peter Fratzl ◽  
Wouter J. E. M. Habraken
Keyword(s):  
Calcium Carbonate ◽  
Aspartic Acid ◽  
Amorphous Calcium Carbonate ◽  
Polymorph Selection

Strained calcite crystals from amorphous calcium carbonate containing an organic molecule

CrystEngComm ◽  
2020 ◽  
Vol 22 (42) ◽  
pp. 7054-7058
Author(s):  
So Sugiyama ◽  
Mihiro Takasaki ◽  
Yuya Oaki ◽  
Hiroaki Imai
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Carbonate ◽  
Aspartic Acid ◽  
Organic Molecule ◽  
Amorphous Calcium Carbonate

Strained calcite was produced from amorphous calcium carbonate (ACC) containing aspartic acid and characterized by Raman spectroscopy and nanoindentation.

Morphology and Polymorph Selectivity Control in Calcium Carbonate Mineralization

2004 ◽  
Vol 847 ◽  
Author(s):  
Swaminathan Sindhu ◽  
Parayil K. Ajikumar ◽  
Subbiah Jegadesan ◽  
Suresh Valiyaveettil
Keyword(s):  
Thin Film ◽  
Calcium Carbonate ◽  
Low Temperature ◽  
Aspartic Acid ◽  
Polyacrylic Acid ◽  
Room Temperature ◽  
Amorphous Calcium Carbonate ◽  
Precipitated Calcium Carbonate ◽  
Selectivity Control

ABSTRACTThe present paper describes the mineralization of calcium carbonate at a low temperature (4 °C) and in presence of additives. Aspartic acid immobilized polyacrylic acid (PA-Asp) induced the nucleation of spherical vaterite polymorph at 4 °C. But at room temperature, a thin film of calcite was deposited. Moreover, stable amorphous calcium carbonate was precipitated in presence of magnesium at low temperature. The observed results show that low temperature and presence of additives influence the nucleation, polymorph selectivity and morphology of the precipitated calcium carbonate.

scholarly journals Citrate Effects on Amorphous Calcium Carbonate (ACC) Structure, Stability, and Crystallization

2015 ◽  
Vol 25 (20) ◽  
pp. 3081-3090 ◽  
Author(s):  
Dominique J. Tobler ◽  
Juan Diego Rodriguez-Blanco ◽  
Knud Dideriksen ◽  
Nicolas Bovet ◽  
Karina K. Sand ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Structure Stability ◽  
Amorphous Calcium Carbonate

scholarly journals Pure hydroxyapatite synthesis originating from amorphous calcium carbonate

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Michika Sawada ◽  
Kandi Sridhar ◽  
Yasuharu Kanda ◽  
Shinya Yamanaka
Keyword(s):  
Calcium Carbonate ◽  
Calcium Phosphate ◽  
Room Temperature ◽  
Molar Ratio ◽  
Final Phase ◽  
Amorphous Calcium Carbonate ◽  
Phosphate Compound ◽  
Synthesis Strategy ◽  
Phosphorylation Reaction ◽  
Subsequent Calcination

AbstractWe report a synthesis strategy for pure hydroxyapatite (HAp) using an amorphous calcium carbonate (ACC) colloid as the starting source. Room-temperature phosphorylation and subsequent calcination produce pure HAp via intermediate amorphous calcium phosphate (ACP). The pre-calcined sample undergoes a competitive transformation from ACC to ACP and crystalline calcium carbonate. The water content, ACC concentration, Ca/P molar ratio, and pH during the phosphorylation reaction play crucial roles in the final phase of the crystalline phosphate compound. Pure HAp is formed after ACP is transformed from ACC at a low concentration (1 wt%) of ACC colloid (1.71 < Ca/P < 1.88), whereas Ca/P = 1.51 leads to pure β-tricalcium phosphate. The ACP phases are precursors for calcium phosphate compounds and may determine the final crystalline phase.

scholarly journals On the Relation of Amorphous Calcium Carbonate and the Macromechanical Properties of Sea Urchin Spines

2020 ◽  
Vol 22 (4) ◽  
pp. 1900922 ◽  
Author(s):  
Christoph Lauer ◽  
Sebastian Haußmann ◽  
Patrick Schmidt ◽  
Carolin Fischer ◽  
Doreen Rapp ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate ◽  
Sea Urchin Spines

scholarly journals Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule

2008 ◽  
Vol 105 (45) ◽  
pp. 17362-17366 ◽  
Author(s):  
Y. Politi ◽  
R. A. Metzler ◽  
M. Abrecht ◽  
B. Gilbert ◽  
F. H. Wilt ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate ◽  
Transformation Mechanism

scholarly journals Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth

1997 ◽  
Vol 264 (1380) ◽  
pp. 461-465 ◽  
Author(s):  
Elia Beniash ◽  
Joanna Aizenberg ◽  
Lia Addadi ◽  
Stephen Weiner
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate
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