Microfluidic-SANS

Flow processing of complex fluids

Carlos G. Lopez, Takaichi Watanabe, Anne Martel, Lionel Porcar, Joao T. Cabral

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Understanding and engineering the flow-response of complex and non-Newtonian fluids at a molecular level is a key challenge for their practical utilisation. Here we demonstrate the coupling of microfluidics with small angle neutron scattering (SANS).Microdevices with high neutron transmission (up to 98%), low scattering background (≲10-2 cm-1), broad solvent compatibility and high pressure tolerance (≈3-15 bar) are rapidly prototyped via frontal photo polymerisation. Scattering from single microchannels of widths down to 60 μm, with beam footprint of 500 mmdiameter, was successfully obtained in the scattering vector range 0.01-0.3 Å-1, corresponding to real space dimensions of ≃10-600 Å. We demonstrate our approach by investigating the molecular re-orientation and alignment underpinning the flow response of two model complex fluids, namely cetyl trimethylammonium chloride/pentanol/D2O and sodium lauryl sulfate/octanol/brine lamellar systems. Finally, we assess the applicability and outlook of microfluidic-SANS for high-throughput and flow processing studies, with emphasis of soft matter.

Original languageEnglish
Article number7727
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - Jan 12 2015
Externally publishedYes

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neutron scattering
fluids
scattering
footprints
microchannels
sodium sulfates
compatibility
retraining
polymerization
chlorides
alignment
engineering
neutrons

ASJC Scopus subject areas

  • General

Cite this

Microfluidic-SANS : Flow processing of complex fluids. / Lopez, Carlos G.; Watanabe, Takaichi; Martel, Anne; Porcar, Lionel; Cabral, Joao T.

In: Scientific Reports, Vol. 5, 7727, 12.01.2015.

Research output: Contribution to journalArticle

Lopez, Carlos G. ; Watanabe, Takaichi ; Martel, Anne ; Porcar, Lionel ; Cabral, Joao T. / Microfluidic-SANS : Flow processing of complex fluids. In: Scientific Reports. 2015 ; Vol. 5.
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