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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1107/S1600576723005356
|2 doi
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|a pubmed25n1201.xml
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|a (DE-627)NLM360548571
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|a (NLM)37555223
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|a DE-627
|b ger
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|a eng
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|a Gibaud, A
|e verfasserin
|4 aut
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|a Insights into the precipitation kinetics of CaCO3 particles in the presence of polystyrene sulfonate using in situ small-angle X-ray scattering
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 23.09.2024
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © Alain Gibaud et al. 2023.
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|a The formation of calcium carbonate (CaCO3) 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 CaCO3 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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|a Journal Article
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|a Porod constant
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4 |
|a SAXS
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|a biomineralization
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|a calcium carbonate precipitation
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| 650 |
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|a polystyrene sulfonate
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|a small-angle X-ray scattering
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| 650 |
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|a time-resolved studies
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|a Younas, D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Matthews, L
|e verfasserin
|4 aut
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1 |
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|a Narayanan, T
|e verfasserin
|4 aut
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1 |
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|a Longkaew, K
|e verfasserin
|4 aut
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1 |
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|a Hageberg, I U
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chushkin, Y
|e verfasserin
|4 aut
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1 |
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|a Breiby, D W
|e verfasserin
|4 aut
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|a Chattopadhyay, B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 56(2023), Pt 4 vom: 01. Aug., Seite 1114-1124
|w (DE-627)NLM098121561
|x 0021-8898
|7 nnas
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| 773 |
1 |
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|g volume:56
|g year:2023
|g number:Pt 4
|g day:01
|g month:08
|g pages:1114-1124
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|u http://dx.doi.org/10.1107/S1600576723005356
|3 Volltext
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|d 56
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|c 08
|h 1114-1124
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