Complementary Control by Additives of the Kinetics of Amorphous CaCO{sub 3} Mineralization at an Organic Interface: In-Situ Synchrotron X-Ray Observations

Journal Article · Fri Jul 28 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.045503· OSTI ID:20860580

Di Masi, Elaine; Kwak, Seo-Young ^[1]; Amos, Fairland F; Olszta, Matthew J; Lush, Debra; Gower, Laurie B ^[2]

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1. National Synchrotron Light Source Department, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
2. Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)

The kinetics of biomimetic mineralization at a fatty acid monolayer interface have been measured in situ by synchrotron x-ray reflectivity. The formation of biologically relevant amorphous calcium carbonate films is affected by soluble macromolecules, supersaturation rate of change, and Mg cations. We find that these solution conditions influence mineral film formation in a complementary fashion. Poly(sodium acrylate) extends the lifetime of metastable amorphous calcium carbonate, solution saturation controls the mineral film growth rate, and Mg cations create a longer induction time. This is the first quantification of potentially competitive biomineralization mechanisms that addresses nucleation and growth of the amorphous mineral phases, which are important in biomineralization.

• OSTI ID: 20860580
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACRYLATES
ADDITIVES
CALCIUM CARBONATES
CARBOXYLIC ACIDS
CATIONS
CRYSTAL GROWTH
FILMS
LIFETIME
MAGNESIUM IONS
MINERALIZATION
MINERALS
NUCLEATION
REACTION KINETICS
REFLECTIVITY
SOLUTIONS
SUPERSATURATION
SYNCHROTRONS
X-RAY DIFFRACTION