Liquid-Liquid Interfacial Transport of Nanoparticles

Machunsky, Stefanie; Peuker, Urs Alexander

doi:https://doi.org/10.1155/2007/34832

Physical Separation in Science and Engineering

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Research Article | Open Access

Volume 2007 | Article ID 034832 | https://doi.org/10.1155/2007/34832

Liquid-Liquid Interfacial Transport of Nanoparticles

Stefanie Machunsky¹and Urs Alexander Peuker¹

Academic Editor: Hermann Nirschl

Received23 Mar 2007

Revised29 Aug 2007

Accepted08 Nov 2007

Published08 Jan 2008

Abstract

The study presents the transfer of nanoparticles from the aqueous phase to the second nonmiscible nonaqueous liquid phase. The transfer is based on the sedimentation of the dispersed particles through a liquid-liquid interface. First, the colloidal aqueous dispersion is destabilised to flocculate the particles. The agglomeration is reversible and the flocs are large enough to sediment in a centrifugal field. The aqueous dispersion is laminated above the receiving organic liquid phase. When the particles start to penetrate into the liquid-liquid interface, the particle surface is covered with the stabilising surfactant. The sorption of the surfactant onto the surface of the primary particles leads to the disintegration of the flocs. This phase transfer process allows for a very low surfactant concentration within the receiving organic liquid, which is important for further application, that is, synthesis for polymer-nanocomposite materials. Furthermore, the phase transfer of the nanoparticles shows a high efficiency up to 100% yield. The particle size within the organosol corresponds to the primary particle size of the nanoparticles.

References

T. Banert and U. A. Peuker, “Synthesis of magnetic beads for bio-separation using the solution method,” Chemical Engineering Communications, vol. 194, no. 6, pp. 707–719, 2007.
View at: Publisher Site | Google Scholar
L. P. Ramírez and K. Landfester, “Magnetic polystyrene nanoparticles with a high magnetite content obtained by miniemulsion processes,” Macromolecular Chemistry and Physics, vol. 204, no. 1, pp. 22–31, 2003.
View at: Publisher Site | Google Scholar
F. Caruso, “Nanoengineering of particle surfaces,” Advanced Materials, vol. 13, no. 1, pp. 11–22, 2001.
View at: Publisher Site | Google Scholar
D. I. Gittins and F. Caruso, “Spontaneous phase transfer of nanoparticulate metals from organic to aqueous media,” Angewandte Chemie International Edition, vol. 40, no. 16, pp. 3001–3004, 2001.
View at: Publisher Site | Google Scholar
A. Kumar, P. Mukherjee, and A. Guha et al., “Amphoterization of colloidal gold particles by capping with valine molecules and their phase transfer from water to toluene by electrostatic coordination with fatty amine molecules,” Langmuir, vol. 16, no. 25, pp. 9775–9783, 2000.
View at: Publisher Site | Google Scholar
N. Lala, S. P. Lalbegi, S. D. Adyanthaya, and M. Sastry, “Phase transfer of aqueous gold colloidal particles capped with inclusion complexes of cyclodextrin and alkanethiol molecules into chloroform,” Langmuir, vol. 17, no. 12, pp. 3766–3768, 2001.
View at: Publisher Site | Google Scholar
M. Sastry, A. Kumar, and P. Mukherjee, “Phase transfer of aqueous colloidal gold particles into organic solutions containing fatty amine molecules,” Colloids and Surfaces A, vol. 181, no. 1–3, pp. 255–259, 2001.
View at: Publisher Site | Google Scholar
H. Yao, O. Momozawa, T. Hamatani, and K. Kimura, “Stepwise size-selective extraction of carboxylate-modified gold nanoparticles from an aqueous suspension into toluene with tetraoctylammonium cations,” Chemistry of Materials, vol. 13, no. 12, pp. 4692–4697, 2001.
View at: Publisher Site | Google Scholar
S.-Y. Zhao, S.-H. Chen, D.-G. Li, and H.-Y. Ma, “Phase transfer of Ag nanoparticles by help of centrifugation,” Colloids and Surfaces A, vol. 242, no. 1–3, pp. 145–149, 2004.
View at: Publisher Site | Google Scholar
W. Cheng and E. Wang, “Size-dependent phase transfer of gold nanoparticles from water into toluene by tetraoctylammonium cations: a wholly electrostatic interaction,” Journal of Physical Chemistry B, vol. 108, no. 1, pp. 24–26, 2004.
View at: Publisher Site | Google Scholar
A. Swami, A. Kumar, and M. Sastry, “Formation of water-dispersible gold nanoparticles using a technique based on surface-bound interdigitated bilayers,” Langmuir, vol. 19, no. 4, pp. 1168–1172, 2003.
View at: Publisher Site | Google Scholar
J. Israelachvili, Intermolecular & Surface Forces, Elsevier, San Diego, Calif, USA; Academic Press, London, UK, 2005.
View at: Google Scholar
V. V. Korolev, A. G. Ramazanova, and A. V. Blinov, “Adsorption of surfactants on superfine magnetite,” Russian Chemical Bulletin, vol. 51, no. 11, pp. 2044–2049, 2002.
View at: Publisher Site | Google Scholar
A. K. Dolan and S. F. Edwards, “Theory of the stabilization of colloids by adsorbed polymer,” Proceedings of the Royal Society of London A, vol. 337, no. 1611, pp. 509–516, 1974.
View at: Google Scholar
S. Yokoyama, J. Kouchi, and T. Tabohashi et al., “Emulsifying potency of new amino acid-type surfactant (II): stable water-in-oil (W/O) emulsions containing 85 wt% inner water phase,” Chemical & Pharmaceutical Bulletin, vol. 49, no. 10, pp. 1331–1335, 2001.
View at: Publisher Site | Google Scholar
T. Banert and U. A. Peuker, “Production of highly filled ${Fe}_{3} O_{4}$ /PMMA nanocomposites by the spraying process,” Chemie Ingenieur Technik, vol. 77, no. 3, pp. 224–227, 2005.
View at: Publisher Site | Google Scholar
T. Banert and U. A. Peuker, “Preparation of highly filled super-paramagnetic PMMA-magnetite nanocomposites using the solution method,” Journal of Materials Science, vol. 41, no. 10, pp. 3051–3056, 2006.
View at: Publisher Site | Google Scholar

Copyright

Copyright © 2007 Stefanie Machunsky and Urs Alexander Peuker. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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