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The Effect of Organic Macromolecules on the Vateritet to Calcite Transformation

Published online by Cambridge University Press:  15 February 2011

Liisa Kuhn Spearing ,
S. Sarig ,
D. J. Fink  and
A. H. Heuer
Liisa Kuhn Spearing
Affiliation:
Case Western Reserve University, Department of Materials Science, Cleveland, OH 44106-7204.
S. Sarig
Affiliation:
Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, 91904, Jerusalem, Israel.
D. J. Fink
Affiliation:
Skeletal Research Center, Case Western Reserve University, Cleveland, OH 44106.
A. H. Heuer
Affiliation:
Case Western Reserve University, Department of Materials Science, Cleveland, OH 44106-7204.
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Abstract

Small quantities of acidic macromolecules were added to crystallizing calcium carbonate in an attempt to engineer crystal growth. The additives are simple analogs to those molecules found in close association with the mineral phase in biological ceramics. When 5 or 10 ppm of the four additives (poly-L-glutamate, poly-L-aspartate, polyacrylate and polymaleate) were added to aqueous suspensions of metastable vaterite, the transformation to calcite was markedly retarded, and the morphology of the final crystal product was altered. The two polypeptides were most effective in inhibiting calcite nucleation and growth; they also promoted vaterite aggregation, and caused the formation of large calcite crystals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 330: Symposium S – Biomolecular Materials by Design , 1993 , 127
Copyright
Copyright © Materials Research Society 1994

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References

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