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Production and properties of polyimide aerogels based on 4,4'-oxydianiline and 3,3',4,4'-benzophenonetetracarboxylic and pyromellitic dianhydridesстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 апреля 2026 г.
- Авторы: Bazieva R.N., Ryzhkov A.I., Kostenko M.O., Parenago O.O., Sadovskaya N.V., Panin A.A., Tsegelskaya A.Yu, Kuznetsov A.A.
- Журнал: Russian Journal of Physical Chemistry B
- Том: 19
- Номер: 8
- Год издания: 2025
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1717
- Последняя страница: 1725
- DOI: 10.1134/S199079312570188X
- Аннотация: Two series of polyimide aerogels (PI AGs) based on 4, 4'-oxydianiline (ODA) and one of the twodianhydrides, 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) and pyromellitic dianhydride(PMDA), were synthesized by low-temperature polycondensation of ODA–BTDA and ODA–PMDAmonomer pairs in dimethylformamide with the addition of the crosslinking agent 1,2,3-tris(4-aminophenyl)benzene (TAB), followed by chemical imidization in situ in solution and subsequent drying of PI gel withsupercritical (SC) CO2. PI AGs with a specific surface area of up to Ssp = 230 m2/g were obtained. The influenceof the chemical structure of the anhydride and the TAB content on the shrinkage and specific surfacearea of the synthesized PI AGs was studied. The morphological structure of PI AE was examined using scanningelectron microscopy. A comparison was made of the specific surface area Ssp values for samples obtainedby drying the gel with SC CO2 with and without preliminary replacement of the solvent (DMF) with acetone.It was found that drying without replacing the solvent results in higher Ssp values than drying with solventreplacement and significantly reduces the overall duration of the process of obtaining PI AE.
- Добавил в систему: Цегельская Анна Юрьевна
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