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Influence of treatment with hydrazine and subsequent annealing on the composition and thermophysical properties of polytetrafluoroethylene–graphene oxide composite aerogelстатья
- Авторы: Baskakov Sergei A., Baskakova Yuliya V., Kabachkov Eugene N., Vasilets Victor N., Michtchenko Alexandre, Shulga Yury M.
- Журнал: Applied Physics A: Materials Science and Processing
- Том: 127
- Номер: 6
- Год издания: 2021
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- DOI: 10.1007/s00339-021-04606-6
- Аннотация: The composition and thermophysical properties of the composite aerogel of polytetrafluoroethylene with graphene oxide (PTFE-GO) before and after reduction with hydrazine vapour were investigated using X-ray photoelectron spectroscopy (XPS), thermogravimetry (TG), and differential scanning calorimetry (DSC). The reduction and subsequent heating at 370 °C, it was shown, increases the surface fluorine concentration and the thermal stability of the aerogel. The reduced sample has no weight loss associated with the pyrolysis of oxygen-containing functional groups in the temperature range from 95 to 230 °C. Nevertheless, the destruction of the polymer component even in the reduced aerogel begins at 400 °C, which is much lower than the temperature at the onset of thermal decomposition of bulk PTFE.
- Добавил в систему: Кабачков Евгений Николаевич