Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities

Convective Marangoni instabilities in drying polymer films may induce surface deformations, which persist in the dry film, deteriorating product performance. While theoretic stability analyses are abundantly available, experimental data are scarce. We report transient three-dimensional flow field me...

Descripción completa

Detalles Bibliográficos
Autores principales: Tönsmann, Max, Scharfer, Philip, Schabel, Wilhelm
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068913/
https://www.ncbi.nlm.nih.gov/pubmed/33920103
http://dx.doi.org/10.3390/polym13081223
_version_ 1783683114117103616
author Tönsmann, Max
Scharfer, Philip
Schabel, Wilhelm
author_facet Tönsmann, Max
Scharfer, Philip
Schabel, Wilhelm
author_sort Tönsmann, Max
collection PubMed
description Convective Marangoni instabilities in drying polymer films may induce surface deformations, which persist in the dry film, deteriorating product performance. While theoretic stability analyses are abundantly available, experimental data are scarce. We report transient three-dimensional flow field measurements in thin poly(vinyl acetate)-methanol films, drying under ambient conditions with several films exhibiting short-scale Marangoni convection cells. An initial assessment of the upper limit of thermal and solutal Marangoni numbers reveals that the solutal effect is likely to be the dominant cause for the observed instabilities.
format Online
Article
Text
id pubmed-8068913
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-80689132021-04-26 Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities Tönsmann, Max Scharfer, Philip Schabel, Wilhelm Polymers (Basel) Article Convective Marangoni instabilities in drying polymer films may induce surface deformations, which persist in the dry film, deteriorating product performance. While theoretic stability analyses are abundantly available, experimental data are scarce. We report transient three-dimensional flow field measurements in thin poly(vinyl acetate)-methanol films, drying under ambient conditions with several films exhibiting short-scale Marangoni convection cells. An initial assessment of the upper limit of thermal and solutal Marangoni numbers reveals that the solutal effect is likely to be the dominant cause for the observed instabilities. MDPI 2021-04-10 /pmc/articles/PMC8068913/ /pubmed/33920103 http://dx.doi.org/10.3390/polym13081223 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tönsmann, Max
Scharfer, Philip
Schabel, Wilhelm
Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title_full Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title_fullStr Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title_full_unstemmed Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title_short Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities
title_sort transient three-dimensional flow field measurements by means of 3d µptv in drying poly(vinyl acetate)-methanol thin films subject to short-scale marangoni instabilities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068913/
https://www.ncbi.nlm.nih.gov/pubmed/33920103
http://dx.doi.org/10.3390/polym13081223
work_keys_str_mv AT tonsmannmax transientthreedimensionalflowfieldmeasurementsbymeansof3dμptvindryingpolyvinylacetatemethanolthinfilmssubjecttoshortscalemarangoniinstabilities
AT scharferphilip transientthreedimensionalflowfieldmeasurementsbymeansof3dμptvindryingpolyvinylacetatemethanolthinfilmssubjecttoshortscalemarangoniinstabilities
AT schabelwilhelm transientthreedimensionalflowfieldmeasurementsbymeansof3dμptvindryingpolyvinylacetatemethanolthinfilmssubjecttoshortscalemarangoniinstabilities

Ejemplares similares