Vortex fluidic induced mass transfer across immiscible phases.

Autor:	Jellicoe M; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Igder A; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Chuah C; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Jones DB; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Luo X; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Stubbs KA; School of Molecular Sciences, The University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia., Crawley EM; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Pye SJ; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Joseph N; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Vimalananthan K; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Gardner Z; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Harvey DP; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Chen X; School of Environmental and Life Sciences, The University of Newcastle Callaghan New South Wales 2308 Australia., Salvemini F; Australian Nuclear Science and Technology Organization New Illawara Road, Lucas Heights NSW Australia., He S; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au.; Department of Food Science and Engineering, School of Chemistry Chemical Engineering, Guangzhou University Guangzhou 510006 China., Zhang W; Centre for Marine Bioproducts Development, College of Medicine and Public Health, Flinders University Adelaide SA 5042 Australia., Chalker JM; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Quinton JS; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au.; Flinders Microscopy and Microanalysis (FMMA), College of Science and Engineering, Flinders University GPO Box 2100 Adelaide South Australia 5001 Australia., Tang Y; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au., Raston CL; Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University Bedford Park SA 5042 Australia colin.raston@flinders.edu.au.
Jazyk:	angličtina
Zdroj:	Chemical science [Chem Sci] 2022 Jan 31; Vol. 13 (12), pp. 3375-3385. Date of Electronic Publication: 2022 Jan 31 (Print Publication: 2022).
DOI:	10.1039/d1sc05829k
Abstrakt:	Mixing immiscible liquids typically requires the use of auxiliary substances including phase transfer catalysts, microgels, surfactants, complex polymers and nano-particles and/or micromixers. Centrifugally separated immiscible liquids of different densities in a 45° tilted rotating tube offer scope for avoiding their use. Micron to submicron size topological flow regimes in the thin films induce high inter-phase mass transfer depending on the nature of the two liquids. A hemispherical base tube creates a Coriolis force as a 'spinning top' (ST) topological fluid flow in the less dense liquid which penetrates the denser layer of liquid, delivering liquid from the upper layer through the lower layer to the surface of the tube with the thickness of the layers determined using neutron imaging. Similarly, double helical (DH) topological flow in the less dense liquid, arising from Faraday wave eddy currents twisted by Coriolis forces, impact through the less dense liquid onto the surface of the tube. The lateral dimensions of these topological flows have been determined using 'molecular drilling' impacting on a thin layer of polysulfone on the surface of the tube and self-assembly of nanoparticles at the interface of the two liquids. At high rotation speeds, DH flow also occurs in the denser layer, with a critical rotational speed reached resulting in rapid phase demixing of preformed emulsions of two immiscible liquids. ST flow is perturbed relative to double helical flow by changing the shape of the base of the tube while maintaining high mass transfer between phases as demonstrated by circumventing the need for phase transfer catalysts. The findings presented here have implications for overcoming mass transfer limitations at interfaces of liquids, and provide new methods for extractions and separation science, and avoiding the formation of emulsions. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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