Formation of Hydrophobic Coatings on the Surface of Track Etched Membranes Using Magnetron Sputtering of Polymers in Vacuum

Kravets, L.I.; Altynov, V.A.; Gainutdinov, R.V.; Gilman, A.B.; Satulu, V.; Mitu, B.; Dinescu, G.

Авторы: Kravets L.I., Altynov V.A., Gainutdinov R.V., Gilman A.B., Satulu V., Mitu B., Dinescu G.
Журнал: Inorganic Materials: Applied Research
Том: 15
Номер: 5
Год издания: 2024
Первая страница: 1473
Последняя страница: 1482
Аннотация: The surface properties and chemical structure of nanosized coatings deposited on the surface ofpolyethylene terephthalate track-etched membranes by magnetron sputtering of ultrahigh molecular weightpolyethylene and polytetrafluoroethylene in a vacuum have been studied. Application of coatings leads tohydrophobization of surface of the original membranes, the degree of which depends on the type of polymerused for sputtering and the coating thickness. The use of this modification method causes smoothing of structuralinhomogeneities of the surface layer of membranes, which is explained by the deposition of coatings inthe pore channels at a certain depth from the inlet and the overlap of pores on the surface of modified membranes.In addition, the deposition of coatings on the surface of track-etched membranes leads to a change inthe shape of pores. The pore diameter decreases significantly on the modified side and remains unchangedon the untreated side of the membrane, while the membrane pores acquire an asymmetrical (conical) shape.The study of chemical structure of coatings using X-ray photoelectron spectroscopy showed that they containoxygen-containing functional groups owing to oxidation of the polymer matrix. The developed compositemembranes can be used in membrane distillation processes for seawater desalination.
Добавил в систему: Гильман Алла Борисовна

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Formation of Hydrophobic Coatings on the Surface of Track Etched Membranes Using Magnetron Sputtering of Polymers in Vacuumстатья

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