Aspects of polymer surfaces wetting
DOI:
https://doi.org/10.15587/1729-4061.2014.20797Keywords:
Owens–Wendt method, surface energy, surfactants, polymers, wetting, wetting angleAbstract
Predicting quantitative characteristics of polymer surfaces wetting is one of the urgent tasks, which is to be solved at designing the systems of adhesives, coatings, printing materials, etc. The hydrophilic–lipophilic balance concept, which, however, allows only a qualitative effectiveness assessment of wetting agents is often used to solve this problem. The modified Owens–Wendt method, the theoretical basis of which allows to determine the relationship between the components of the surface tension of liquid and wetting efficiency of polymer surface with the known energy distribution is used in this paper. A practical approach, allowing to define the parameters of the surface tension of surfactants solutions, using the reference data on the components of the surface tension of liquids is proposed. It was shown that the method allows to achieve the high measurement accuracy of the specified solutions parameters and quantitatively predict the angles values of polymer surfaces wetting by liquid with the accuracy ± 4°. It was determined that solutions of anionic and nonionic surfactants are characterized by extremely low values of the polar component of the surface tension. At the same time, the values of solvent dispersion component increase at introducing these modifiers. The results are of practical importance, and can be used to develop wetting agents for the systems of polymeric adhesives, printing materials and coatings for plastics. Developing the obtained theoretical patterns will allow to take into account the influence of bi– and three–component solvent systems in the model that provides a quantitative description of such processes as dispersing highly–hydrophobic pigments and creating strong adhesion contacts in polymeric systems.
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Copyright (c) 2014 Валентин Анатольевич Свидерский, Алексей Владимирович Миронюк, Анна Владимировна Придатко, Павел Владимирович Сиволапов
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