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Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering

The formation of calcium carbonate (CaCO(3)) nanoparticles (NPs) in the presence of polystyrene sulfonate (PSS) as an additive was examined by time-resolved small-angle X-ray scattering (SAXS) in a flow system that mimics experimental conditions used at home facilities where the precipitation can be...

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Autores principales: Gibaud, A., Younas, D., Matthews, L., Narayanan, T., Longkaew, K., Hageberg, I. U., Chushkin, Y., Breiby, D. W., Chattopadhyay, B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10405600/
https://www.ncbi.nlm.nih.gov/pubmed/37555223
http://dx.doi.org/10.1107/S1600576723005356
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author Gibaud, A.
Younas, D.
Matthews, L.
Narayanan, T.
Longkaew, K.
Hageberg, I. U.
Chushkin, Y.
Breiby, D. W.
Chattopadhyay, B.
author_facet Gibaud, A.
Younas, D.
Matthews, L.
Narayanan, T.
Longkaew, K.
Hageberg, I. U.
Chushkin, Y.
Breiby, D. W.
Chattopadhyay, B.
author_sort Gibaud, A.
collection PubMed
description The formation of calcium carbonate (CaCO(3)) nanoparticles (NPs) in the presence of polystyrene sulfonate (PSS) as an additive was examined by time-resolved small-angle X-ray scattering (SAXS) in a flow system that mimics experimental conditions used at home facilities where the precipitation can be achieved in a beaker. The experiments were carried out at low concentrations to remain in the dilute regime. A model-independent analysis was performed using the Porod invariant which defines the scale factor, leaving only the distribution of radii as the adjustable parameter. The presence of the PSS additive strongly retards the precipitation of CaCO(3) NPs. The formation of NPs reaches a state of equilibrium after a few minutes. Here, it is shown that the concentration of precursors at a fixed PSS concentration plays a key role in determining the size of the NPs obtained. A full analysis of the SAXS patterns was carried out using the Hurd–Flower model to account for the weaker intensity decay than the classical Porod behaviour. The temporal evolution of the particle radii was determined. Wide-angle X-ray scattering experiments carried out simultaneously show that the particles formed have the structure of vaterite with growth consistent with the evolution of the Porod invariant.
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spelling pubmed-104056002023-08-08 Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering Gibaud, A. Younas, D. Matthews, L. Narayanan, T. Longkaew, K. Hageberg, I. U. Chushkin, Y. Breiby, D. W. Chattopadhyay, B. J Appl Crystallogr Research Papers The formation of calcium carbonate (CaCO(3)) nanoparticles (NPs) in the presence of polystyrene sulfonate (PSS) as an additive was examined by time-resolved small-angle X-ray scattering (SAXS) in a flow system that mimics experimental conditions used at home facilities where the precipitation can be achieved in a beaker. The experiments were carried out at low concentrations to remain in the dilute regime. A model-independent analysis was performed using the Porod invariant which defines the scale factor, leaving only the distribution of radii as the adjustable parameter. The presence of the PSS additive strongly retards the precipitation of CaCO(3) NPs. The formation of NPs reaches a state of equilibrium after a few minutes. Here, it is shown that the concentration of precursors at a fixed PSS concentration plays a key role in determining the size of the NPs obtained. A full analysis of the SAXS patterns was carried out using the Hurd–Flower model to account for the weaker intensity decay than the classical Porod behaviour. The temporal evolution of the particle radii was determined. Wide-angle X-ray scattering experiments carried out simultaneously show that the particles formed have the structure of vaterite with growth consistent with the evolution of the Porod invariant. International Union of Crystallography 2023-07-14 /pmc/articles/PMC10405600/ /pubmed/37555223 http://dx.doi.org/10.1107/S1600576723005356 Text en © Alain Gibaud et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Gibaud, A.
Younas, D.
Matthews, L.
Narayanan, T.
Longkaew, K.
Hageberg, I. U.
Chushkin, Y.
Breiby, D. W.
Chattopadhyay, B.
Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title_full Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title_fullStr Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title_full_unstemmed Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title_short Insights into the precipitation kinetics of CaCO(3) particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
title_sort insights into the precipitation kinetics of caco(3) particles in the presence of polystyrene sulfonate using in situ small-angle x-ray scattering
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10405600/
https://www.ncbi.nlm.nih.gov/pubmed/37555223
http://dx.doi.org/10.1107/S1600576723005356
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