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Belov NA, Alentiev AY, Pashkevich DS, Voroshilov FA, Dvilis ES, Nikiforov RY, Chirkov SV, Syrtsova DA, Kostina JV, Ponomarev II, Asanov IP, Bogdanova YG. Hydrophobic-Hydrophilic Properties and Characterization of PIM-1 Films Treated by Elemental Fluorine in Liquid Perfluorodecalin. Polymers (Basel) 2022; 14:polym14235152. [PMID: 36501547 PMCID: PMC9740323 DOI: 10.3390/polym14235152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
A direct fluorination technique was applied for the surface treatment of PIM-1 films in a liquid phase (perfluorodecalin). The fluorinated samples were analyzed by various instrumental techniques. ATR-IR spectroscopy showed that the fluorination predominantly takes place in methylene- and methyl-groups. Cyano-groups, aromatic hydrogens and the aromatic structure of the PIM-1 repeat unit were shown to be relatively stable at the fluorination conditions. XPS confirmed that the concentration of fluorine, as well as oxygen, in the near surface layer (~1 nm) increases with fluorination time. C1s and O1s surface spectra of the fluorinated PIM-1 samples indicated an appearance of newly-formed C-F and C-O functional groups. Scanning electron microscopy and X-ray energy-dispersive spectroscopy of the fluorinated PIM-1 samples showed an increase of the fluorine concentration at the surface (~0.1-1 μm) with the treatment duration. Analysis of the slices of the PIM-1 films demonstrated a decline of the fluorine content within several microns of the film depth. The decline increased with the fluorination time. A model of fluorine concentration dependence on the film depth and treatment duration was suggested. A change in the specific free surface energy as a result of PIM-1 fluorination was revealed. The fluorination time was shown to affect the surface energy (γSV), providing its shift from a low value (25 mJ∙m-2), corresponding to tetrafluoroethylene, up to a relatively high value, corresponding to a hydrophilic surface.
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Affiliation(s)
- Nikolay A. Belov
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-926-432-8323
| | - Aleksandr Yu. Alentiev
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
| | - Dmitrii S. Pashkevich
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
- Institute of Applied Mathematics and Mechanics, Peter the Great St. Petersburg Polytechnic University, 29, Polytechnicheskaya St., 195251 St. Petersburg, Russia
| | - Fedor A. Voroshilov
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
| | - Edgar S. Dvilis
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
| | - Roman Yu. Nikiforov
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
| | - Sergey V. Chirkov
- Engineering Center, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
| | - Daria A. Syrtsova
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
| | - Julia V. Kostina
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninskii Prospect, 119991 Moscow, Russia
| | - Igor I. Ponomarev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, Vavilova St., 119991 Moscow, Russia
| | - Igor P. Asanov
- A.V. Nikolaev Institute of Inorganic Chemistry of Siberian Branch, Russian Academy of Sciences, 3, Academician Lavrentiev St., 630090 Novosibirsk, Russia
| | - Yulia G. Bogdanova
- Chemical Department, M.V. Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russia
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Blinov IA, Belov NA, Suvorov AV, Chirkov SV, Kostina YV, Mazur AS, Kambur MP, Belochvostov VM, Alentiev AY, Vozniuk ON, Yampolskii YP. Fluorination of polystyrene by elemental fluorine in liquid media. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Belov NA, Blinov IA, Suvorov AV, Nikiforov RY, Chirkov SV, Alentiev AY, Kambur MP, Kostina YV, Levin IS, Shapagin AV, Yampolskii YP. Gas Permeability of Cellulose Acetate Films Treated with Fluorine in Perfluorodecalin. MEMBRANES AND MEMBRANE TECHNOLOGIES 2021. [DOI: 10.1134/s2517751621020025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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