Open AccessAutomation of determining the contact angle of washing liquids wetting
Author(s) -
В. В. Алексеев,
Vladimir Philippov,
I. V. Fadeev,
Sergey Chuchkalov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1333/4/042001
Subject(s) - wetting , contact angle , pulmonary surfactant , materials science , surface energy , process (computing) , biological system , process engineering , chemical engineering , chemistry , composite material , computer science , engineering , biology , operating system
The physicochemical activity of the washing environment is related to the value of the contact wetting angle of the solution and the body being washed and changes rather quickly. In this study a technique and software tool were developed for the rapid determination of the dependence of the contact wetting angle on the concentration of surface-active substances (surfactants) and the selection of optimal values. The technique was based on pixel-by-pixel processing of photographs of cleaning solutions droplets on various types of the studied surfaces with using color contrasting. The data were processed by statistical methods which allow determining the value of the derivative of the surface equation and finding the contact wetting angle. The dependence of the wetting angle on the surfactant concentration was studied using multiplicative power functions. The results showed a decreasing return value of the contact wetting angle from increasing surfactant concentration. It was defined that the influence of potassium monoborate (PMB) together with MS-8 is the most effective. The obtained results allow calculating and optimizing surfactants percentage defining the quality and performance of the washing process at the design stage of the technological process for various options for the combined use of surfactants.