20.500.12556/DiRROS-19119 Kinetics of surface wettability of aromatic polymers (PET, PS, PEEK, and PPS) upon treatment with neutral oxygen atoms from non-equilibrium oxygen plasma The wettability of polymers is usually inadequate to ensure the appropriate spreading of polar liquids and thus enable the required adhesion of coatings. A standard ecologically benign method for increasing the polymer wettability is a brief treatment with a non-equilibrium plasma rich in reactive oxygen species and predominantly neutral oxygen atoms in the ground electronic state. The evolution of the surface wettability of selected aromatic polymers was investigated by water droplet contact angles deposited immediately after exposing polymer samples to fluxes of oxygen atoms between 3 × 1020 and 1 × 1023 m−2 s −1 . The treatment time varied between 0.01 and 1000 s. The wettability evolution versus the O-atom fluence for all aromatic polymers followed similar behavior regardless of the flux of O atoms or the type of polymer. In the range of fluences between approximately 5 × 1020 and 5 × 1023 m−2 , the water contact angle decreased exponentially with increasing fluence and dropped to 1/e of the initial value after receiving the fluence close to 5 × 1022 m−2 polimeri prevleke tanke plasti true false true MDPI Švica Angleški jezik Slovenski jezik © 2024 by the authors. Neznano 2024-06-19 14:32:22 2024-06-19 14:32:23 2024-06-20 03:37:43 0000-00-00 00:00:00 2024 0 0 15 str. Art. 1381 Vol. 16 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-04-23 2024-05-09 2024-05-12 539 2073-4360 10.3390/polym16101381 198795779 RAZ_Vesel_Alenka_2024.pdf RAZ_Vesel_Alenka_2024.pdf 1 47631F976021DF90583A815310A8B698 5551b4d8cd5368f8c5faca36f4594a1f0d674484202a6ac5a4db22e5d4aeed15 a65cf7b0-2e38-11ef-9c9e-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26309 Institut Jožef Stefan 0 0 0