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WaterSorption by Polyheteroarylenesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 13 июля 2022 г.
- Авторы: Chalykh A.E., Petrova T.F., Ponomarev I.I.
- Журнал: Polymers
- Том: 14
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 2255
- DOI: 10.3390/polym14112255
- Аннотация: The sorption–diffusion characteristics of rigid-chain glassy polymers based on polyheteroarylenes(PHAs) have been studied in a wide interval of relative humidity and temperatures ofthermal treatment of the polymer sorbents. Experimental data on water vapor sorption for polynaphthoyleneimidobenzimidazole(PNIB) and its copolymers with different chemical nature havebeen obtained. Water diffusion coefficients have been calculated, and parameters of their concentrationand temperature dependences have been determined. It was found that water moleculessorbed by PNIB and its copolymers are strongly bounded. Water mobile and cluster states dependon the structure of macromolecules and thermal prehistory of polymer sorbents. It is shown thatthe translational coefficients of water diffusion for all PHAs are in the range from 10−9 to 10−8 cm2/s.The diffusion coefficients also increase slightly with temperature increasing, and their general dependenceon temperature is satisfactorily described by the Arrhenius equation. The average activationenergy of water diffusion varies from 24.3 to 25.9 kJ/mol. The hydrate numbers of rigid-chain PHAs functional groups have been determined. The above-mentioned results allow us topredict the sorption properties of heterocyclic macromolecular sorbents with complex chain architecture.
- Добавил в систему: Пономарев Игорь Игоревич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | polymers-_31_05_22_Water_PNIB.pdf | polymers-_31_05_22_Water_PNIB.pdf | 731,0 КБ | 31 мая 2022 [gagapon@ineos.ac.ru] |