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Inverse gas chromatographic study of sorption thermodynamics in thermally rearranged (TR) polymer based on 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane (bisAPAF) and 4,4'-hexafluoroisopropylidene diphthalic anhydride (6FDA)статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 апреля 2017 г.
- Авторы: Belov N.A., Nizhegorodova Yu A., Kim S., Han S.H., Yampolskii Yu P., Lee Y.M.
- Журнал: Industrial and Engineering Chemistry Research
- Том: 52
- Номер: 31
- Год издания: 2013
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 10467
- Последняя страница: 10475
- DOI: 10.1021/ie3034027
- Аннотация: This work reports the first investigation using the inverse gas chromatography method of a polyimide precursor and the product of its thermal rearrangement (TR polymer), extensively studied earlier. Sorption of gases (CO2, C2H6, C3H8) was studied at the finite dilution regime, while vapors (n-alkanes C7, C8, C10, C14, C16) were investigated at infinite dilution. It was demonstrated that thermal treatment at 450 °C results in a significant increase in the solubility coefficients S for large gas molecules. The absolute values observed for the TR polymer solubility coefficients of solutes are significant and comparable with those for the polymer of intrinsic microporosity (PIM-1), the polymer known by the greatest S values among all of the polymers studied. Sorption thermodynamics in the TR polymer is distinguished by very large and negative mixing parameters: enthalpy h̅1E,∞ and entropy s̅1E,∞.
- Добавил в систему: Ямпольский Юрий Павлович