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Thermodynamics of the sorption of organic vapors in a carbosilane dendrimer and a hyperbranched polymerстатья
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: 13 января 2015 г.
- Авторы: Belov N.A., Sheremet’eva N.A., Yampolskii Y.P., Muzafarov A.M.
- Журнал: Polymer Science, Series A
- Том: 51
- Номер: 5
- Год издания: 2009
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 518
- Последняя страница: 530
- DOI: 10.1134/s0965545x09050058
- Аннотация: Fluorinated derivatives of the carbosilane G6 dendrimer and the hyperbranched polymer of the same chemical structure are synthesized and characterized via the method of inverse gas chromatography. For various organic compounds (n-alkanes, aromatic hydrocarbons, partially fluorinated and perfluorinated organic compounds), the following thermodynamic parameters of their interaction with the above polymers are defined: solubility coefficient S, the sorption enthalpy, the partial molar enthalpy of mixing, the Flory-Huggins parameter, and the solubility parameter. The thermodynamic behavior of vapors in the dendrimer is similar to that in the hyperbranched polymer. For a dendrimer and a hyperbranched polymer, a linear correlation between the logarithm of S and T (cr) (2) is established, where T (cr) is the critical temperature of a probe. For both polymers, the partial enthalpy of mixing of n-alkanes is shown to be independent of the dimensions of the probe molecules. This behavior is typical of the vapor sorption in linear polymers at temperatures above the glass transition temperature.
- Добавил в систему: Музафаров Азиз Мансурович