Complementary Control by Additivies of the Kinetics of Amorphous CaCO3 Mineralization at an Organic Interface: In-Situ Synchrotron X-ray Observations
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.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 914410
- Report Number(s):
- BNL-78978-2007-JA; PRLTAO; TRN: US0802864
- Journal Information:
- Phys. Rev. Lett., Vol. 97; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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