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Application of the Density Variation Methodon Calciumcarbonate Nanoparticles

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2006

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https://doi.org/10.1007/2882_012
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WANDREY, Christine, ed., Helmut CÖLFEN, ed.. Analytical Ultracentrifugation VIII. Berlin/Heidelberg: Springer-Verlag, 2006, pp. 126-128. Progress in Colloid and Polymer Science. 131. ISBN 3-540-29615-8. Available under: doi: 10.1007/2882_012

Zusammenfassung

The simultaneous determination of particle size and density distributions by the so called density variation method via measurement of the same sample in H2O and D2O proved to be of great value for latex systems. However, many colloids of practical interest are inorganic or inorganic-organic hybrid colloids. Their density is usually much higher than that of the solvents so that the density variation method appears of limited applicability. In addition, these systems are usually charged – a complication, which was so far not yet considered in the theory for the density variation method. In this work, we apply this method to the determination of the particle size and density of CaCO3 precursor particles, which form superstructures in order to elucidate their crystal modification. Interestingly, the particle densities can be determined rather reasonably, whereas the particle size is much more influenced by the nonideality.

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ISO 690CÖLFEN, Helmut, Antje VÖLKEL, 2006. Application of the Density Variation Methodon Calciumcarbonate Nanoparticles. In: WANDREY, Christine, ed., Helmut CÖLFEN, ed.. Analytical Ultracentrifugation VIII. Berlin/Heidelberg: Springer-Verlag, 2006, pp. 126-128. Progress in Colloid and Polymer Science. 131. ISBN 3-540-29615-8. Available under: doi: 10.1007/2882_012
BibTex
@incollection{Colfen2006Appli-40387,
  year={2006},
  doi={10.1007/2882_012},
  title={Application of the Density Variation Methodon Calciumcarbonate Nanoparticles},
  number={131},
  isbn={3-540-29615-8},
  publisher={Springer-Verlag},
  address={Berlin/Heidelberg},
  series={Progress in Colloid and Polymer Science},
  booktitle={Analytical Ultracentrifugation VIII},
  pages={126--128},
  editor={Wandrey, Christine and Cölfen, Helmut},
  author={Cölfen, Helmut and Völkel, Antje}
}
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