Abstract
Chemical interaction of transition metals (Mo, W, Ta, Nb, and Ti) with a tetrafluoroethylene-vinylidene fluoride (TFE-VDF) copolymer (21 mol % TFE + 79 mol % VDF) has been studied by differential scanning calorimetry (DSC) and mass spectrometry. The DSC curves of mixtures of the fluoropolymer with Ta, Nb, and Ti showed exothermic peaks, and those of composites with W and Mo showed endothermic peaks. Mass spectrometric analysis indicated that the fluoropolymer reacted with the transition metals to form the higher fluorides TaF5, NbF5, TiF4, WF6, and MoF6. In addition, WOF4 and MoOF4 molecules were detected in the case of tungsten and molybdenum. At temperatures above 700 K, the mass spectra of all the systems showed ions corresponding to low-molecular hydrocarbon molecules.
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References
Kavan, L., Electrochemical Carbon, Chem. Rev., 1997, vol. 97, pp. 3061–3082.
Cadman, P. and Gossedge, G.M., The Chemical Interaction of Metals with Polytetrafluorethylene, J. Mater. Sci., 1979, vol. 14, pp. 2672–2678.
Carlo, S.R., Pery, C.C., Torres, J., et al., Surface Reactions of Vapor Phase Titanium Atoms with Halogen and Nitrogen Containing Polymers Studied Using In Situ X-Ray Photoelectron Spectroscopy and Atomic Force Microscopy, Appl. Surf. Sci., 2002, vol. 195, pp. 93–106.
Malkerova, I.P., Disproportionation Reactions and Thermodynamic Properties of the Lower Fluorides, Oxyfluorides, and Trifluorides of the Group VIB Transition Metals, Cand. Sci. (Chem.) Dissertation, Moscow: Kurnakov Inst. of General and Inorganic Chemistry, 1983, pp. 148–150.
Termodinamicheskie konstanty veshchestv: Spravochnik (Thermodynamic Constants of Substances: A Handbook), Glushko, V.P. et al., Eds., Moscow: VINITI, 1974, issue 7.
Osnovnye svoistva neorganicheskikh ftoridov: Spravochnik (Main Properties of Inorganic Fluorides), Galkin, N.P., Ed., Moscow: Atomizdat, 1976.
Gotkis, I.S., Mass Spectrometric Vaporization Studies of Niobium, Tantalum, and Tungsten Pentafluorides, Cand. Sci. (Chem.) Dissertation, Ivanovo: IKhTI, 1975, pp. 74–87, 1140–116.
Medvedev, V.A., Ftornaya kallorimetriya (Fluorine Bomb Calorimetry), Moscow: Nauka, 1978.
Panshin, Yu.A., Malkevich, S.G., and Dunaevskaya, Ts.S., Ftoroplasty (Fluoroplastics), Leningrad: Khimiya, 1978.
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Original Russian Text © A.V. Tarasov, A.S. Alikhanian, I.V. Arkhangel’skii, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 7, pp. 871–876.
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Tarasov, A.V., Alikhanian, A.S. & Arkhangel’skii, I.V. Chemical interaction of fluoropolymers with transition metals. Inorg Mater 45, 809–813 (2009). https://doi.org/10.1134/S002016850907019X
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DOI: https://doi.org/10.1134/S002016850907019X