Abstract
Thermochemical transformations that lead oxide used as filler in a polytetrafluoroethylene matrix undergoes in the course of heat treatment were studied. Samples were prepared from a mixture of the polymer with the filler by pressing followed by heat treatment. X-ray diffraction analysis shows that the heat treatment in air leads to multistep thermochemical reaction of the polymer with the inorganic filler with the formation of Pb2F2O and PbF2. Presumably, dispersed lead oxide particles occurring in intimate contact with the polymer, when heated in air, initiate the polymer degradation via cleavage of the C−F bond to form new compounds. Along with the formation of new compounds, the reduction of lead oxide to the metal is observed.
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19 February 2020
The text in Funding section should be replaced by “The study was performed within the framework of the government assignment of Baikal Institute of Nature Management (Siberian Branch of Russian Academy of Sciences) and of the Ministry of Education and Science of the Russian Federation, project no. 9.7667.2017/BCh, 9.11221.2018/11.12.”
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Rogov, V.E., Kurbatov, R.V. & Bokhoeva, L.A. Thermochemical Reaction of Lead Oxide with a Polytetrafluoroethylene Matrix. Russ J Appl Chem 92, 218–221 (2019). https://doi.org/10.1134/S1070427219020071
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DOI: https://doi.org/10.1134/S1070427219020071