---
_id: '26139'
abstract:
- lang: eng
  text: The study presents first experimental results of the transfer of magnetite
    nanoparticles from an aqueous to a second non-miscible non-aqueous liquid phase.
    The transfer is based on the adsorption of macromolecular surfactants onto the
    particle surface at the liquid–liquid interface. For a successful direct phase
    transfer, it is essential to have cations, like ammonium ions, present in the
    aqueous phase as well as a threshold concentration of surfactant in the organic
    liquid phase. While penetrating the liquid–liquid interface, the particles are
    covered with the surfactant and therefore a partial de-agglomeration is initiated.
    Based on literature and experimental data a mechanism of surfactant adsorption
    is proposed. The competing adsorption of the surfactant molecules at the liquid–liquid
    interface leads to the formation of emulsions and therefore to a hindrance for
    particles passing the interface. Nevertheless a high efficiency of 100% yield
    can be reached using optimized process parameters for the phase transfer process.
author:
- first_name: Stefanie
  full_name: Machunsky, Stefanie
  last_name: Machunsky
- first_name: Philipp
  full_name: Grimm, Philipp
  last_name: Grimm
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
- first_name: Urs A.
  full_name: Peuker, Urs A.
  last_name: Peuker
citation:
  ama: 'Machunsky S, Grimm P, Schmid H-J, Peuker UA. Liquid–liquid phase transfer
    of magnetite nanoparticles. <i>Colloids and Surfaces A: Physicochemical and Engineering
    Aspects</i>. 2009;348(1-3):186-190. doi:<a href="https://doi.org/10.1016/j.colsurfa.2009.07.014">10.1016/j.colsurfa.2009.07.014</a>'
  apa: 'Machunsky, S., Grimm, P., Schmid, H.-J., &#38; Peuker, U. A. (2009). Liquid–liquid
    phase transfer of magnetite nanoparticles. <i>Colloids and Surfaces A: Physicochemical
    and Engineering Aspects</i>, <i>348</i>(1–3), 186–190. <a href="https://doi.org/10.1016/j.colsurfa.2009.07.014">https://doi.org/10.1016/j.colsurfa.2009.07.014</a>'
  bibtex: '@article{Machunsky_Grimm_Schmid_Peuker_2009, title={Liquid–liquid phase
    transfer of magnetite nanoparticles}, volume={348}, DOI={<a href="https://doi.org/10.1016/j.colsurfa.2009.07.014">10.1016/j.colsurfa.2009.07.014</a>},
    number={1–3}, journal={Colloids and Surfaces A: Physicochemical and Engineering
    Aspects}, author={Machunsky, Stefanie and Grimm, Philipp and Schmid, Hans-Joachim
    and Peuker, Urs A.}, year={2009}, pages={186–190} }'
  chicago: 'Machunsky, Stefanie, Philipp Grimm, Hans-Joachim Schmid, and Urs A. Peuker.
    “Liquid–Liquid Phase Transfer of Magnetite Nanoparticles.” <i>Colloids and Surfaces
    A: Physicochemical and Engineering Aspects</i> 348, no. 1–3 (2009): 186–90. <a
    href="https://doi.org/10.1016/j.colsurfa.2009.07.014">https://doi.org/10.1016/j.colsurfa.2009.07.014</a>.'
  ieee: 'S. Machunsky, P. Grimm, H.-J. Schmid, and U. A. Peuker, “Liquid–liquid phase
    transfer of magnetite nanoparticles,” <i>Colloids and Surfaces A: Physicochemical
    and Engineering Aspects</i>, vol. 348, no. 1–3, pp. 186–190, 2009, doi: <a href="https://doi.org/10.1016/j.colsurfa.2009.07.014">10.1016/j.colsurfa.2009.07.014</a>.'
  mla: 'Machunsky, Stefanie, et al. “Liquid–Liquid Phase Transfer of Magnetite Nanoparticles.”
    <i>Colloids and Surfaces A: Physicochemical and Engineering Aspects</i>, vol.
    348, no. 1–3, 2009, pp. 186–90, doi:<a href="https://doi.org/10.1016/j.colsurfa.2009.07.014">10.1016/j.colsurfa.2009.07.014</a>.'
  short: 'S. Machunsky, P. Grimm, H.-J. Schmid, U.A. Peuker, Colloids and Surfaces
    A: Physicochemical and Engineering Aspects 348 (2009) 186–190.'
date_created: 2021-10-13T15:21:05Z
date_updated: 2022-01-06T06:57:16Z
doi: 10.1016/j.colsurfa.2009.07.014
intvolume: '       348'
issue: 1-3
language:
- iso: eng
page: 186-190
publication: 'Colloids and Surfaces A: Physicochemical and Engineering Aspects'
publication_identifier:
  issn:
  - 0927-7757
publication_status: published
status: public
title: Liquid–liquid phase transfer of magnetite nanoparticles
type: journal_article
user_id: '70093'
volume: 348
year: '2009'
...