{"publication_identifier":{"issn":["0927-7757"]},"title":"Liquid–liquid phase transfer of magnetite nanoparticles","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."}],"volume":348,"author":[{"full_name":"Machunsky, Stefanie","last_name":"Machunsky","first_name":"Stefanie"},{"full_name":"Grimm, Philipp","last_name":"Grimm","first_name":"Philipp"},{"first_name":"Hans-Joachim","id":"464","full_name":"Schmid, Hans-Joachim","last_name":"Schmid"},{"first_name":"Urs A.","last_name":"Peuker","full_name":"Peuker, Urs A."}],"year":"2009","user_id":"70093","_id":"26139","page":"186-190","publication":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","citation":{"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} }","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>","short":"S. Machunsky, P. Grimm, H.-J. Schmid, U.A. Peuker, Colloids and Surfaces A: Physicochemical and Engineering Aspects 348 (2009) 186–190.","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>.","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>.","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>","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>."},"date_updated":"2022-01-06T06:57:16Z","issue":"1-3","type":"journal_article","status":"public","doi":"10.1016/j.colsurfa.2009.07.014","publication_status":"published","intvolume":"       348","date_created":"2021-10-13T15:21:05Z","language":[{"iso":"eng"}]}