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Liquid Transfer for Viscoelastic Solutions

Article dans une revue avec comité de lecture
Auteur
PINGULKAR, Hrishikesh
56485 Laboratoire Ondes et Milieux Complexes [LOMC]
PEIXINHO, Jorge
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
CRUMEYROLLE, Olivier
56485 Laboratoire Ondes et Milieux Complexes [LOMC]

URI
http://hdl.handle.net/10985/21075
DOI
10.1021/acs.langmuir.1c01462
Date
2021
Journal
Langmuir

Résumé

Viscoelastic liquid transfer from one surface to another is a process that finds applications in many technologies, primarily in printing. Here, cylindrical-shaped capillary bridges pinned between two parallel disks are considered. Specifically, the effects of polymer mass fraction, solution viscosity, disk diameter, initial aspect ratio, final aspect ratio, stretching velocity, and filling fraction (alike contact angle) are experimentally investigated in uniaxial extensional flow. Both Newtonian and viscoelastic polymer solutions are prepared using polyethylene glycol and polyethylene oxide, with a wide variety of mass fractions. The results show that the increase in polymer mass fraction and solvent viscosity reduces the liquid transfer to the top surface. Moreover, the increase in the initial and final stretching heights of the capillary bridge also decreases the liquid transfer for both Newtonian and viscoelastic solutions. Finally, the shape of the capillary bridge is varied by changing the liquid volume. Now, Newtonian and viscoelastic solutions exhibit opposite behaviors for the liquid transfer. These findings are discussed in terms of interfacial shape instability and gravitational drainage.

Fichier(s) constituant cette publication

Nom:
PIMM_ACS_L_2021_PEIXINHO.pdf
Taille:
1.432Mo
Format:
PDF
Fin d'embargo:
2022-03-01
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Documents liés

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  • Drop dynamics of viscoelastic filaments 
    Article dans une revue avec comité de lecture
    PINGULKAR, Hrishikesh; PEIXINHO, Jorge; CRUMEYROLLE, Olivier (American Physical Society, 2020)
    The stretching of viscoelastic polymer solutions close to breakup can create attached drops on a filament, whose properties and dynamics are little understood. The stretching of capillary bridges and the consecutive filament, ...
  • Dewetting Dynamics of Sheared Thin Polymer Films: An Experimental Study 
    Article dans une revue avec comité de lecture
    DMOCHOWSKA, Anna; PEIXINHO, Jorge; SOLLOGOUB, Cyrille; MIQUELARD-GARNIER, Guillaume (American Chemical Society (ACS), 2022-04-01)
    An experimental investigation is reported on the effect of shear on the bursting of molten ultrathin polymer films embedded in an immiscible matrix. By use of an optical microscope coupled with a shearing hot stage, the ...
  • Direct numerical simulations of laminar and transitional flows in diverging pipes 
    Article dans une revue avec comité de lecture
    VITTAL SHENOY, Dhanush; SHADLOO, M. S.; PEIXINHO, Jorge; HADJADJ, Abdellah (Emerald, 2019)
    Purpose: Fluid flows in pipes whose cross-sectional area are increasing in the stream-wise direction are prone to separation of the recirculation region. This paper aims to investigate such fluid flow in expansion pipe ...
  • Flow and air-entrainment around partially submerged vertical cylinders 
    Article dans une revue avec comité de lecture
    AGEORGES, Valentin; PEIXINHO, Jorge; PÉRRET, Gaële (American Physical Society, 2019)
    In this study, a partially submerged vertical cylinder is moved at constant velocity through water, which is initially at rest. During the motion, the wake behind the cylinder induces free-surface deformation. Eleven ...
  • Experiments and Simulations of Free-Surface Flow behind a Finite Height Rigid Vertical Cylinder 
    Article dans une revue avec comité de lecture
    AGEORGES, Valentin; PEIXINHO, Jorge; PERRET, Gaële; LARTIGUE, Ghislain; MOUREAU, Vincent (MDPI AG, 2021)
    We present the results of a combined experimental and numerical study of the free-surface flow behind a finite height rigid vertical cylinder. The experiments measure the drag and the wake angle on cylinders of different ...

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