dc.creator | Modesto-López, Luis B. | es |
dc.creator | Pérez-Arjona, Agustín | es |
dc.creator | Gañán-Calvo, Alfonso M. | es |
dc.date.accessioned | 2019-02-27T16:28:14Z | |
dc.date.available | 2019-02-27T16:28:14Z | |
dc.date.issued | 2019-02 | |
dc.identifier.citation | Modesto-López, L.B., Pérez-Arjona, A. y Gañán-Calvo, Alfonso M. (2019). Flow Blurring-Enabled Production of Polymer Filaments from Poly(ethylene oxide) Solutions. ACS Omega, 4 (2), 2693-2701. | |
dc.identifier.issn | 2470-1343 | es |
dc.identifier.uri | https://hdl.handle.net/11441/83609 | |
dc.description.abstract | Flow blurring (FB) atomizers are relatively
simple yet robust devices used for the generation of sprays
from solutions of a wide range of viscosities. In this work, we
have demonstrated that FB devices may also be applied for
massive production of liquid filaments from polymeric
solutions. They can later be transformed into solid filaments
and fibers, leading to the production of so-called fiber mats.
The liquid precursors consisted of poly(ethylene oxide)
(PEO) solutions of varying molecular weights (105 [100k]
to 4 × 106 g/mol [4M]) and concentrations. The FB device
was operated in the gas pressure range of 3−6 bar. Except for
solutions of PEO 100k, all solutions exhibited a shear thinning
behavior. For massive filament production, a threshold
polymer concentration (ct) was identified for each molecular
weight. Below such concentration, the atomization resulted in droplets (the classical FB functioning mode). Such a threshold
value decreased as the PEO molecular weight increased, and it coincides with the polymer coil overlap concentration, c*. The
viscoelastic nature of the solutions was also observed to increase with the molecular weight. A 3.2 dependency of the zero-shear
rate viscosity on a so-called Bueche parameter was found for filament production, whereas a nearly linear dependency was found
for droplet production. In general, the mean diameter of the filaments decreased as they traveled downstream from the
atomization point. Furthermore, at a given distance from the atomizer outlet and gas pressure, the mean filament diameter
slightly shifted toward larger sizes with increasing PEO molecular weight. The tendency agrees well with the calculated
filaments’ Deborah number, which increases with PEO molecular weight. The approach presented herein describes a highthroughput
and efficient method for the massive production of viscous filaments. These may be transformed into fibers by an
on-line drying step. | es |
dc.description.sponsorship | Ministerio de Economía y Competitividad DPI2016-78887-C3-1-R | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | ACS Publications | es |
dc.relation.ispartof | ACS Omega, 4 (2), 2693-2701. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Distribution function | es |
dc.subject | Fibers | es |
dc.subject | Mechanical properties | es |
dc.subject | Polymer morphology | es |
dc.subject | Polyoxyalkylenes | es |
dc.subject | Viscosity | es |
dc.title | Flow Blurring-Enabled Production of Polymer Filaments from Poly(ethylene oxide) Solutions | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
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 | DPI2016-78887-C3-1-R | es |
dc.relation.publisherversion | https://pubs.acs.org/doi/abs/10.1021/acsomega.8b02542# | es |
dc.identifier.doi | 10.1021/acsomega.8b02542 | es |
dc.contributor.group | Universidad de Sevilla. TEP219: Fisica de Fluidos y Microfluidica | es |
idus.format.extent | 9 | es |
dc.journaltitle | ACS Omega | es |
dc.publication.volumen | 4 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 2693 | es |
dc.publication.endPage | 2701 | es |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO). España | |