Dendritic Pattern Formation and Contact Line Forces during Dewetting of Dilute Polymer Solutions on a Hydrophobic Surface

Bertola, Volfango ORCID: 0000-0001-5357-6191 (2022) Dendritic Pattern Formation and Contact Line Forces during Dewetting of Dilute Polymer Solutions on a Hydrophobic Surface. COLLOIDS AND INTERFACES, 6 (1). p. 5.

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Official URL: http://dx.doi.org/10.3390/colloids6010005

Abstract

<jats:p>The micro-scale morphology of the receding contact line of dilute polyethylene oxide solution drops (c ∼ 100 ppm) after impact and inertial spreading on a fluorinated hydrophobic surface is investigated. One can observe the formation of transient liquid filaments and dendritic structures that evolve into a bead-on-a-string structure similar to the well-known capillary breakup mechanism of dilute polymer solutions, which confirm the interaction between stetched polymer coils and the receding three-phase contact line. The estimation of the average polymer force per unit contact line lenght provides a quantitative explanation for the reduction of the contact line retraction velocity reduction observed experimentally.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	dilute polymer solution, wetting, contact line, coil-stretch transition
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	13 Jan 2022 14:54
Last Modified:	15 Mar 2024 09:45
DOI:	10.3390/colloids6010005
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3146200