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Mihai, M. ; Bucatariu, F. ; Aflori, M. ; Schwarz, S.
Synthesis and characterization of new CaCO3/poly(2-acrylamido-2-methylpropanesulfonic acid-co-acrylic acid) polymorphs, as templates for core/shell particles

The crystallization of CaCO3 particles from aqueous solutions in the absence and presence of a strong/weak anionic copolymer, poly(2-acrylamido-2-methylpropanesulfonic acid–co-acrylic acid) (PAMPSAA) is discussed in this paper. Vaterite/calcite polymorphs with different sizes and spherical shapes were obtained. The products were characterized by infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, flow particle image analysis, laser diffraction technology, and SEM and optical microscopy. Oppositely charged chitosan and PAMPSAA were assembled onto carbonate colloidal particles in a layer-by-layer manner to yield core–shell structures.

Source
Journal of Crystal Growth 351, 23-31

DOI
http://dx.doi.org/10.1016/j.jcrysgro.2012.04.010

Published
May 2012
 
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