Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)

Abstract Engineering flow processes to direct the microscopic structure of soft materials represents a growing area of materials research. In situ small-angle neutron scattering under flow (flow-SANS) is an attractive probe of fluid microstructure under simulated processing conditions, but current c...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Patrick T. Corona, Nino Ruocco, Kathleen M. Weigandt, L. Gary Leal, Matthew E. Helgeson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Four-roll Mill Small-angle Neutron Scattering (SANS) SANS Measurements Principal Strain Rate Axes Cellulose Nanocrystals (CNC) Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1f69bac857e24c7fba382377c3874972
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1f69bac857e24c7fba382377c3874972
record_format	dspace
spelling	oai:doaj.org-article:1f69bac857e24c7fba382377c38749722021-12-02T15:08:24ZProbing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)10.1038/s41598-018-33514-82045-2322https://doaj.org/article/1f69bac857e24c7fba382377c38749722018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33514-8https://doaj.org/toc/2045-2322Abstract Engineering flow processes to direct the microscopic structure of soft materials represents a growing area of materials research. In situ small-angle neutron scattering under flow (flow-SANS) is an attractive probe of fluid microstructure under simulated processing conditions, but current capabilities require many different sample environments to fully interrogate the deformations a fluid experiences in a realistic processing flow. Inspired by recent advances in microfluidics, we present a fluidic four-roll mill (FFoRM) capable of producing tunable 2D flow fields for in situ SANS measurements, that is intended to allow characterization of complex fluid nanostructure under arbitrary complex flows within a single sample environment. Computational fluid dynamics simulations are used to design a FFoRM that produces spatially homogeneous and sufficiently strong deformation fields. Particle tracking velocimetry experiments are then used to characterize the flows produced in the FFoRM for several classes of non-Newtonian fluids. Finally, a putative FFoRM-SANS workflow is demonstrated and validated through the characterization of flow-induced orientation in a semi-dilute cellulose nanocrystal dispersion under a range of 2D deformations. These novel experiments confirm that, for steady state straining flows at moderate strain rates, the nanocrystals orient along the principal strain-rate axis, in agreement with theories for rigid, rod-like Brownian particles in a homogeneous flow.Patrick T. CoronaNino RuoccoKathleen M. WeigandtL. Gary LealMatthew E. HelgesonNature PortfolioarticleFour-roll MillSmall-angle Neutron Scattering (SANS)SANS MeasurementsPrincipal Strain Rate AxesCellulose Nanocrystals (CNC)MedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-18 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Four-roll Mill Small-angle Neutron Scattering (SANS) SANS Measurements Principal Strain Rate Axes Cellulose Nanocrystals (CNC) Medicine R Science Q
spellingShingle	Four-roll Mill Small-angle Neutron Scattering (SANS) SANS Measurements Principal Strain Rate Axes Cellulose Nanocrystals (CNC) Medicine R Science Q Patrick T. Corona Nino Ruocco Kathleen M. Weigandt L. Gary Leal Matthew E. Helgeson Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
description	Abstract Engineering flow processes to direct the microscopic structure of soft materials represents a growing area of materials research. In situ small-angle neutron scattering under flow (flow-SANS) is an attractive probe of fluid microstructure under simulated processing conditions, but current capabilities require many different sample environments to fully interrogate the deformations a fluid experiences in a realistic processing flow. Inspired by recent advances in microfluidics, we present a fluidic four-roll mill (FFoRM) capable of producing tunable 2D flow fields for in situ SANS measurements, that is intended to allow characterization of complex fluid nanostructure under arbitrary complex flows within a single sample environment. Computational fluid dynamics simulations are used to design a FFoRM that produces spatially homogeneous and sufficiently strong deformation fields. Particle tracking velocimetry experiments are then used to characterize the flows produced in the FFoRM for several classes of non-Newtonian fluids. Finally, a putative FFoRM-SANS workflow is demonstrated and validated through the characterization of flow-induced orientation in a semi-dilute cellulose nanocrystal dispersion under a range of 2D deformations. These novel experiments confirm that, for steady state straining flows at moderate strain rates, the nanocrystals orient along the principal strain-rate axis, in agreement with theories for rigid, rod-like Brownian particles in a homogeneous flow.
format	article
author	Patrick T. Corona Nino Ruocco Kathleen M. Weigandt L. Gary Leal Matthew E. Helgeson
author_facet	Patrick T. Corona Nino Ruocco Kathleen M. Weigandt L. Gary Leal Matthew E. Helgeson
author_sort	Patrick T. Corona
title	Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
title_short	Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
title_full	Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
title_fullStr	Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
title_full_unstemmed	Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)
title_sort	probing flow-induced nanostructure of complex fluids in arbitrary 2d flows using a fluidic four-roll mill (fform)
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/1f69bac857e24c7fba382377c3874972
work_keys_str_mv	AT patricktcorona probingflowinducednanostructureofcomplexfluidsinarbitrary2dflowsusingafluidicfourrollmillfform AT ninoruocco probingflowinducednanostructureofcomplexfluidsinarbitrary2dflowsusingafluidicfourrollmillfform AT kathleenmweigandt probingflowinducednanostructureofcomplexfluidsinarbitrary2dflowsusingafluidicfourrollmillfform AT lgaryleal probingflowinducednanostructureofcomplexfluidsinarbitrary2dflowsusingafluidicfourrollmillfform AT matthewehelgeson probingflowinducednanostructureofcomplexfluidsinarbitrary2dflowsusingafluidicfourrollmillfform
_version_	1718388109403488256

Probing flow-induced nanostructure of complex fluids in arbitrary 2D flows using a fluidic four-roll mill (FFoRM)

Ejemplares similares