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Bio-Inspired Hydrogel-Calcium Carbonate Core-Shell Particles

Published online by Cambridge University Press:  26 February 2011

Yi-Yeoun Kim
Affiliation:
[email protected], Specialty Minerals Inc, Strategic Research & Discovery, 9 Highland Ave, Bethlehem, PA, 18017, United States, 6108613472, 6108613412
John W Catino
Affiliation:
[email protected], Specialty Minerals Inc, Analytical Services, 640 N. 13th Street, Easton, PA, 18042, United States
Gary P Tomaino
Affiliation:
[email protected], Specialty Minerals Inc, Analytical Services, 640 N. 13th Street, Easton, PA, 18042, United States
Sherman D Cox
Affiliation:
[email protected], Specialty Minerals Inc, Strategic Research & Discovery, 9 Highland Ave, Bethlehem, PA, 18017, United States
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Abstract

In this report, we present a bio-inspired encapsulation process to create nanocluster-assembled core-shell particles under aqueous, room temperature and non-toxic conditions. The approach to synthesize calcium carbonate core-shell particles is accomplished by employing a Polymer-Induced Liquid-Precursor (PILP) process. We demonstrate the amorphous mineral precursor is coated around a core of hydrogel nanoparticles, and subsequently solidified and crystallized. The synthesized core-shell particles are 300∼500nm diameter and ∼100 nm shell-thickness. We investigate the role of the hydrogel core of the particle using time-resolved XRD, thermal-XRD and thermal analysis. The organic hydrogel appears to influence the transformation of mineral phases, stabilizing the amorphous phase of calcium carbonate.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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