TY - JOUR

T1 - Experimental study of the contact line friction coefficient

AU - Sibiryakov, N.

AU - Zheng, W.

AU - Kabov, O.

AU - Bai, B.

N1 - Funding Information: This work was supported by National Natural Science Foundation of China (No.51425603) and by the Ministry of Education and Science of the Russian Federation (Agreement 14.613.21.0067, project identifier RFMEFI61317X0067). Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/12/3

Y1 - 2020/12/3

N2 - Industrial applications use surfactants to control surface tension and wettability of surfaces. Instead of studying prepared solutions, we focus on the movement of the contact line after adding the surfactant. We placed the pedant drop with surfactant to a sessile drop of pure water and filmed the spreading process to obtain friction coefficient of the contact line. Our results confirmed that adding surfactants to sessile droplets drives the contact line movement. Small concentrations of LHS and SDBS as well as high concentrations of SDBS pin droplet and increase the hysteresis. Friction coefficient for cationic CTAB and zwitterionic LHS drops with the concentration increase. Anionic SDBS decreases contact angle, making the surface more hydrophilic and intensifying hysteresis.

AB - Industrial applications use surfactants to control surface tension and wettability of surfaces. Instead of studying prepared solutions, we focus on the movement of the contact line after adding the surfactant. We placed the pedant drop with surfactant to a sessile drop of pure water and filmed the spreading process to obtain friction coefficient of the contact line. Our results confirmed that adding surfactants to sessile droplets drives the contact line movement. Small concentrations of LHS and SDBS as well as high concentrations of SDBS pin droplet and increase the hysteresis. Friction coefficient for cationic CTAB and zwitterionic LHS drops with the concentration increase. Anionic SDBS decreases contact angle, making the surface more hydrophilic and intensifying hysteresis.

UR - http://www.scopus.com/inward/record.url?scp=85097328313&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1677/1/012156

DO - 10.1088/1742-6596/1677/1/012156

M3 - Conference article

AN - SCOPUS:85097328313

VL - 1677

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012156

T2 - 36th Siberian Thermophysical Seminar, STS 2020

Y2 - 5 October 2020 through 7 October 2020

ER -