dc.creator | Marín Brenes, Fernando | es |
dc.creator | Olmedo-Pradas, Jesús | es |
dc.creator | Gañán-Calvo, Alfonso M. | es |
dc.creator | Modesto-López, Luis B. | es |
dc.date.accessioned | 2021-07-14T17:42:42Z | |
dc.date.available | 2021-07-14T17:42:42Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Marín Brenes, F., Olmedo Pradas, J., Gañán-Calvo, A.M. y Modesto López, L. (2021). On the ejection of filaments of polymer solutions triggered by a micrometer-scale mixing mechanism. Materials, 14, Article number 3399. | |
dc.identifier.issn | 1996-1944 | es |
dc.identifier.uri | https://hdl.handle.net/11441/116140 | |
dc.description | Article number 3399 | es |
dc.description.abstract | Polymer filaments constitute precursor materials of so-called fiber mats, ubiquitous structures across cutting-edge technological fields. Thus, approaches that contribute to large-scale production of fibers are desired from an industrial perspective. Here, we use a robust liquid atomization
device operated at relatively high flow rates, ~20 mL/min, as facilitating technology for production
of multiple polymer filaments. The method relies on a turbulent, energetically efficient micro-mixing
mechanism taking place in the interior of the device. The micro-mixing is triggered by radial implosion of a gas current into a liquid feeding tube, thus resulting in breakup of the liquid surface. We used
poly(ethylene oxide) solutions of varying concentrations as test liquids to study their fragmentation
and ejection dynamics employing ultra-high speed imaging equipment. Taking an energy cascade
approach, a scaling law for filament diameter was proposed based on gas pressure, liquid flow rate
and viscosity. We find that a filament dimensionless diameter, D∗
f
, scales as a non-dimensional liquid
flow rate Q∗
to the 1/5. The study aims to elucidate the underlying physics of liquid ejection for
further applications in material production. | es |
dc.description.sponsorship | Junta de Andalucía P18-FR-3623 | es |
dc.description.sponsorship | Junta de Andalucía P18-FR-3375 | es |
dc.description.sponsorship | Ministerio de Ciencia, Innovación y Universidades (España) PCI2018-093040 | es |
dc.format | application/pdf | es |
dc.format.extent | 12 p. | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.relation.ispartof | Materials, 14, Article number 3399. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Flow blurring | es |
dc.subject | Poly(ethylene oxide) | es |
dc.subject | Filaments | es |
dc.subject | Scaling law | es |
dc.subject | Viscosity | es |
dc.subject | Turbulence | es |
dc.subject | Kolmogorov’s theory | es |
dc.subject | Boundary layer thickness | es |
dc.subject | Liquid flow rate | es |
dc.title | On the ejection of filaments of polymer solutions triggered by a micrometer-scale mixing mechanism | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos | es |
dc.relation.projectID | P18-FR-3623 | es |
dc.relation.projectID | P18-FR-3375 | es |
dc.relation.projectID | PCI2018-093040 | es |
dc.relation.publisherversion | https://www.mdpi.com/1996-1944/14/12/3399 | es |
dc.identifier.doi | 10.3390/ma14123399 | es |
dc.journaltitle | Materials | es |
dc.publication.volumen | 14 | es |
dc.publication.initialPage | Article number 3399 | es |