Morphologies and Crystal Phase Control of Calcium Carbonate Using “Crew-Cut” Micelles of Poly (styrene)-b-Poly (acrylic acid) as a Crystal Growth Modifier at Room Temperature

Qing Kai Li; Yan Ping Wang; Yi Min Wang

doi:10.4028/www.scientific.net/AMR.418-420.398

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Morphologies and Crystal Phase Control of Calcium...

Morphologies and Crystal Phase Control of Calcium Carbonate Using “Crew-Cut” Micelles of Poly (styrene)-b-Poly (acrylic acid) as a Crystal Growth Modifier at Room Temperature

Abstract:

Cubic layer-structured calcite and spherical vaterite were successfully prepared in the present of PS-b-PAA at room temperature. The products were characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD) and flourier transform infrared spectrum (FI-IR). The characterized results revealed that the PS-b-PAA concentration had a considerable influence on the morphologies and crystal phase transformation. With the PS-b-PAA concentration increasing, the crystal phase of CaCO₃particles would have a significant transition from calcite to vaterite, and the morphologies also showed remarkable changes from cubic layer-superstructure to spherical shape. Furthermore, cubic structured CaCO₃ particles with a larger size of ca. 100 μm in side length could be prepared by gas diffusion method, indicating that the “crew-cut” micelles are able to result in long-live crystal active sites so that novel large-scale inorganic materials might be prepared.

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Materials Processing Technology, ICAMMP2011

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Periodical:

Advanced Materials Research (Volumes 418-420)

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398-401

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https://doi.org/10.4028/www.scientific.net/AMR.418-420.398

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Online since:

December 2011

Authors:

Qing Kai Li, Yan Ping Wang, Yi Min Wang

Keywords:

CaCO₃, Crew-Cut Micelles, Crystal Structure, Morpholoy, Phase Transformation

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