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Bio-Inspired Hydrogel-Calcium Carbonate Core-Shell Particles

Published online by Cambridge University Press:  26 February 2011

Yi-Yeoun Kim ,
John W Catino ,
Gary P Tomaino  and
Sherman D Cox
Yi-Yeoun Kim
Affiliation:
yiyeoun@gmail.com, Specialty Minerals Inc, Strategic Research & Discovery, 9 Highland Ave, Bethlehem, PA, 18017, United States, 6108613472, 6108613412
John W Catino
Affiliation:
john.catino@mineralstech.com, Specialty Minerals Inc, Analytical Services, 640 N. 13th Street, Easton, PA, 18042, United States
Gary P Tomaino
Affiliation:
gary.tomaino@mineralstech.com, Specialty Minerals Inc, Analytical Services, 640 N. 13th Street, Easton, PA, 18042, United States
Sherman D Cox
Affiliation:
sherman.cox@mineralstech.com, 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.

Keywords

biomimetic (chemical reaction)amorphouscluster assembly
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 988: Symposium QQ – Solid-State Chemistry of Inorganic Materials VI , 2006 , 0988-QQ03-04
Copyright
Copyright © Materials Research Society 2007

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References

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